Asus A7N266 E User Manual

®
A7N266-E  
JumperFreeDDR DRAM  
266MHz FSB  
NVIDIA® nForce 420-DChipset  
Socket A Motherboard  
USERS MANUAL  
ASUS CONTACT INFORMATION  
ASUSTeK COMPUTER INC. (Asia-Pacific)  
Marketing  
Address:  
Telephone:  
Fax:  
150 Li-Te Road, Peitou, Taipei, Taiwan 112  
+886-2-2894-3447  
+886-2-2894-3449  
Email:  
Technical Support  
MB/Others (Tel): +886-2-2890-7121 (English)  
Notebook (Tel):  
+886-2-2890-7122 (English)  
Desktop/Server (Tel):+886-2-2890-7123 (English)  
Fax:  
+886-2-2890-7698  
www.asus.com.tw  
Email:  
WWW:  
FTP:  
ftp.asus.com.tw/pub/ASUS  
ASUS COMPUTER INTERNATIONAL (America)  
Marketing  
Address:  
6737 Mowry Avenue, Mowry Business Center, Building 2  
Newark, CA 94560, USA  
Fax:  
Email:  
+1-510-608-4555  
Technical Support  
Fax:  
+1-510-608-4555  
www.asus.com  
ftp.asus.com/Pub/ASUS  
Email:  
WWW:  
FTP:  
ASUS COMPUTER GmbH (Europe)  
Marketing  
Address:  
Fax:  
Harkortstr. 25, 40880 Ratingen, BRD, Germany  
+49-2102-442066  
Email:  
[email protected] (for marketing requests only)  
Technical Support  
Hotline:  
Fax:  
Support (Email):  
WWW:  
MB/Others: +49-2102-9599-0 Notebook: +49-2102-9599-10  
+49-2102-9599-11  
www.asuscom.de/de/support (for online support)  
www.asuscom.de  
FTP:  
ftp.asuscom.de/pub/ASUSCOM  
ASUS A7N266-E User’s Manual  
3
CONTENTS  
1. INTRODUCTION ............................................................................. 7  
1.1 How This Manual Is Organized ................................................... 7  
1.2 Item Checklist .............................................................................. 7  
2. FEATURES ........................................................................................ 8  
2.1 ASUS A7N266-E Motherboard ................................................... 8  
2.1.1 Core Specifications............................................................. 8  
2.1.2 Connections ........................................................................ 9  
2.1.3 Special Features.................................................................. 9  
2.1.4 Performance and Intelligence ........................................... 10  
2.2 Motherboard Components.......................................................... 12  
2.2.1 Component Locations....................................................... 13  
3. HARDWARE SETUP ...................................................................... 14  
3.1 Motherboard Layout .................................................................. 14  
3.2 Layout Contents ......................................................................... 15  
3.3 Hardware Setup Procedure......................................................... 16  
3.4 Motherboard Settings ................................................................. 17  
3.5 System Memory ......................................................................... 21  
3.5.1 DDR DIMM Support........................................................ 21  
3.5.2 Memory Installation ......................................................... 22  
3.5.4 General DIMM Memo...................................................... 23  
3.6 Central Processing Unit (CPU) .................................................. 24  
3.7 Expansion Cards ........................................................................ 25  
3.7.1 Installing an Expansion Card ........................................... 25  
3.7.2 Assigning IRQs for Expansion Cards .............................. 26  
3.7.3 Accelerated Graphics Port (AGP) Pro Slot ...................... 28  
3.7.4 Advanced Communications Riser (Slot) .......................... 29  
ACR-A6CH Layout.......................................................... 29  
ACR-A6CH Hardware Installation Procedure ................. 30  
3.8 Connectors ................................................................................ 31  
3.8.1 External Connectors ......................................................... 31  
3.9 Starting Up the First Time.......................................................... 43  
4. BIOS SETUP..................................................................................... 45  
4.1 Managing and Updating Your BIOS .......................................... 45  
4.1.1 Upon First Use of the Computer System.......................... 45  
4.1.2 Updating BIOS Procedures .............................................. 47  
4.2 BIOS Setup Program.................................................................. 49  
4
ASUS A7N266-E User’s Manual  
CONTENTS  
4.2.1 BIOS Menu Bar ................................................................ 50  
4.2.2 Legend Bar ....................................................................... 50  
4.3 Main Menu ................................................................................. 52  
4.3.1 Primary & Secondary Master/Slave ................................. 53  
4.3.2 Keyboard Features............................................................ 56  
4.4 Advanced Menu ......................................................................... 58  
4.4.1 Chip Configuration ........................................................... 61  
4.4.2 I/O Device Configuration ................................................. 63  
4.4.3 PCI Configuration ............................................................ 65  
4.4.4 Shadow Configuration...................................................... 67  
4.5 Power Menu ............................................................................... 68  
4.5.1 Power Up Control............................................................. 69  
4.5.2 Hardware Monitor ............................................................ 70  
4.6 Boot Menu ................................................................................. 71  
4.7 Exit Menu................................................................................... 73  
5. SOFTWARE SETUP ....................................................................... 75  
5.1 Install Operating System ............................................................ 75  
5.2 Start Windows ............................................................................ 75  
5.3 A7N266-E Series Motherboard Support CD ............................. 76  
5.3.2 Installation Procedure ....................................................... 77  
5.3.3 Manual Installation of Drivers for Windows 98............... 78  
6. SOFTWARE REFERENCE ........................................................... 80  
6.1 ASUS Live Update..................................................................... 80  
6.2 ASUS PC Probe ......................................................................... 81  
6.3 3Deep Color Tuner..................................................................... 86  
6.4 CyberLink PowerPlayer SE ....................................................... 88  
6.5 CyberLink VideoLive Mail ........................................................ 89  
7. APPENDIX....................................................................................... 91  
7.1 Glossary ..................................................................................... 91  
7.1 Modem Riser .............................................................................. 95  
7.2.1 56K Software Modem ...................................................... 95  
7.2.2 Primary/Seconday MR ..................................................... 95  
7.2.3 Hardware Installation Procedure ...................................... 95  
7.2.4 Software Setup in Windows 98 ........................................ 96  
INDEX ................................................................................................... 97  
ASUS A7N266-E User’s Manual  
5
FCC & DOC COMPLIANCE  
Federal Communications Commission Statement  
This device complies with FCC Rules Part 15. Operation is subject to the following  
two conditions:  
This device may not cause harmful interference, and  
This device must accept any interference received, including interference that  
may cause undesired operation.  
This equipment has been tested and found to comply with the limits for a Class B  
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to  
provide reasonable protection against harmful interference in a residential  
installation. This equipment generates, uses and can radiate radio frequency energy  
and, if not installed and used in accordance with manufacturer's instructions, may  
cause harmful interference to radio communications. However, there is no guarantee  
that interference will not occur in a particular installation. If this equipment does  
cause harmful interference to radio or television reception, which can be determined  
by turning the equipment off and on, the user is encouraged to try to correct the  
interference by one or more of the following measures:  
Re-orient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment to an outlet on a circuit different from that to which  
the receiver is connected.  
Consult the dealer or an experienced radio/TV technician for help.  
WARNING!Any changes or modifications to this product not expressly approved  
by the manufacturer could void any assurances of safety or performance and  
could result in violation of Part 15 of the FCC Rules.  
Reprinted from the Code of Federal Regulations #47, part 15.193, 1993. Washington DC: Office of the  
Federal Register, National Archives and Records Administration, U.S. Government Printing Office.  
Canadian Department of Communications Statement  
This digital apparatus does not exceed the Class B limits for radio noise emissions  
from digital apparatus set out in the Radio Interference Regulations of the Canadian  
Department of Communications.  
This Class B digital apparatus complies with Canadian ICES-003.  
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.  
6
ASUS A7N266-E User’s Manual  
1. INTRODUCTION  
1.1 How This Manual Is Organized  
This manual is divided into the following sections:  
1. INTRODUCTION  
2. FEATURES  
3. HARDWARE SETUP  
4. BIOS SETUP  
Manual information and checklist  
Production information and specifications  
Instructions on setting up the motherboard.  
Instructions on setting up the BIOS  
5. SOFTWARE SETUP  
6. SOFTWARE REFERENCE  
7. APPENDIX  
Instructions on setting up the included software  
Reference material for the included software  
Optional items and general reference  
1.2 Item Checklist  
Check that your package is complete. If you discover damaged or missing items,  
contact your retailer.  
Package Contents  
Optional Items  
(1) ASUS Motherboard  
ASUS IrDA-compliant infrared  
module  
(1) 40-pin 80-conductor ribbon  
cable for internal  
ASUS AGP-DVI/TV Card  
UltraDMA100/66//33 IDE  
drives  
(1) extra 40-pin 80-conductor  
ribbon cable  
(1) Ribbon cable for two 3.5”  
floppy disk drives  
(1) ASUS Support CD with drivers  
and utilities  
(1) Bag of spare jumper caps  
(1) ASUS 2-port USB Connector  
Set  
(1) ACR-A6CH Audio Card  
(1) Quick Set-up Guide and  
Reference Card (Retail Box  
only)  
(2) Games CD (Retail Box only)  
(1) Users Manual  
ASUS A7N266-E Users Manual  
7
2. FEATURES  
2.1 ASUS A7N266-E Motherboard  
TheASUSA7N266-E motherboard is a high-performance motherboard powered by  
AMD® AthlonXP /Athlon/Duronprocessors. It sports the new nVidia® nForce  
420-Dchipset and features GeForce2MXGPU performance. The board offers  
users advanced features to provide superlative performance. The A7N266-E meets  
todays demand for a superior quality, fully integrated system.  
2.1.1 Core Specifications  
AMD® AthlonXP/Athlon/ DuronProcessor support: Features the latest  
AMDs, 500MHz to 1.6 GHz and higher.  
North Bridge System Chipset: Features the brand new nVidia® nForceIGP-  
128 integrated GPU/North Bridge controller chipset. The controller supports a  
64/128bit DDR memory controller integrated with a GeForce2 MX-class  
advanced Graphics Processing Unit (GPU) with a high performance dual pixel  
processing pipeline, a 256-bit 3D/2D graphics accelerator that supplies per pixel  
shading rasterization and a full AGP 4X interface, a digital video interface to  
DVI transmitters /TV encoders and an interface for up to 1.5 GB of 266/200MHz  
DDR SDRAM memory. The 128bit memory controller provides a phenomenal  
4.2 GB/second system memory bandwidth.  
South Bridge System Chipset: Features the brand new nVidia® nForce™  
MCP-D integrated peripheral South Bridge controller operates at 800MB/sec to  
communicate with the North Bridge for maximum bandwith required for PCI,  
USB and support for Fast Ethernet devices. The chipset has an integrated APU  
(Audio Processing Unit) that provides 6-ChannelAC97 compliant 3D positional  
audio and Dolbydigital encoding. The controller supports standard UltraDMA/  
100/66/33 for burst mode data transfer rates of up to 100MB/sec. Separate data  
paths for each IDE channel are built-in to support up to four IDE devices. The  
controller supports six USB ports and 5 PCI slots and is PCI rev 2.2 compliant.  
The MCP supplies an LPC 1.0 interface along with AT legacy functions, a clock  
synthesizer, and meetsACPI 1.0 and PCI Power Management 1.1 specifications.  
PC2100 / PC1600 DDR Support: Equipped with three Double Data Rate Dual  
Inline Memory Module (DDR DIMM) sockets to support up to 1.5GB of DDR  
DRAM. DDR DRAM supplies the highest bandwidth (64/128 bit) and offers  
the lowest latency currently available, improving the memory systems ability to  
service multimedia requirements.  
Easy Frequency Changes: Now, easily overclock all important frequency  
settings - simply and quickly with the onboard BIOS firmware.  
Smart BIOS: 2Mb firmware enables Vcore and CPU/DDR SDRAM frequency  
adjustments, boot-block write protection, enhancedACPI, DMI, Green and PnP  
Features Plus.  
ASUS A7N266-E Users Manual  
8
2. FEATURES  
2.1.2 Connections  
CPU socket: Socket A (462) for AthlonXP / Athlon/ Duronprocessors.  
PCI Expansion Slots: Provides five 32-bit PCI slots, (PCI 2.2 compliant) with  
no ISA. All PCI slots can support Bus Master PCI cards, such as SCSI or LAN  
cards. (PCI supports up to 133MB/s maximum throughput.) The MB supports  
Concurrent PCI, which allows multiple PCI transfers from PCI master bus to the  
memory and processor.  
IDE connectors: Dual-channel bus master IDE connectors support up to four  
Ultra DMA/100/66, PIO Modes 3 & 4 IDE devices like two HDDs, one DVD  
and an R/W CD.  
AGP Pro Slot: Comes with an Accelerated Graphics Port Pro slot that  
supports AGP cards for high performance, component level interconnect  
targeted at 3D graphical applications using a 4X mode bus. The slot is keyed to  
support only the latest 1.5 volt AGP cards.  
Floppy disk connector: Supports the floppy disk drive.  
USB ports: Six Universal Serial Bus (USB) ports are available for connecting  
USB devices such as a mouse and PDA.  
Serial ports: Two 9-pin COM1/COM2 ports are for all serial devices.  
IrDA: Supports an optional infrared port module for a wireless interface.  
Game/MIDI connector. This connector supports a joystick or a game pad for  
playing games.  
Parallel port: 25-pin port connects a parallel printer or other devices.  
PS/2 mouse port: Green 6-pin connector is for a PS/2 mouse.  
PS/2 keyboard port: Purple 6-pin connector is for a PS/2 keyboard.  
Onboard Power LED: Signals AC power is okay.  
Onboard AGP Warning LED: Signals AGP configuration problems.  
ATX power connector. Supplies the MB with ATX power. The power supply  
must have at least 1A on the +5V standby lead (+5VSB).  
2.1.3 Special Features  
ACR-A6CH-Audio Card: 6-Channel audio along with modem connectivity!  
The ACR-A6CH Audio Communications Riser card does it all! Specially  
designed as a super-connector,the ACR includes two onboard AC97 audio  
CODEC chips; together, the chips supply phenomenal fidelity, including the  
new S/PDIF digital audio format. TheACR-A6CH supports a modem connection  
and three connectors can supply three sets of speakers for full 6-channel sound.  
See page 29 and 30 for layout and installation.  
ASUS A7N266-E Users Manual  
9
2. FEATURES  
2.1.4 Performance and Intelligence  
UltraDMA/100 Support: Comes with an onboard PCI Bus Master IDE controller  
with two connectors that support four IDE devices on two channels. Supports  
UltraDMA/100, UltraDMA/66, UltraDMA/33, PIO Modes 3 & 4, Bus Master  
IDE DMA Mode 2, and Enhanced IDE devices, such as DVD-ROM, CD-ROM,  
CD-R/RW, LS-120, and Tape Backup drives.  
Super Multi-I/O: The multi-I/O chipset offers complete support for a variety of  
I/O functions. Provides two high-speed UART compatible serial ports and one  
parallel port with EPP and ECP capabilities. UART2 can also be directed from  
COM2 to the Infrared Module for wireless connections. The Super I/O controller  
also supports a floppy disk drive, PS/2 keyboard, and PS/2 mouse.  
DDR DRAM Optimized Performance: Normal Double Data Rate Dynamic  
Random Access Memory (DDR DRAM) executes two actions per clock cycle  
and sets a new standard data transfer of up to 2.1 GB/s for 133MHz DDR  
DRAM and 1.6GB/s for 100MHz DDR DRAM. New nVidia® TwinBank™  
technology harnesses the DDR and doubles the Double Data Rate:the chipset  
further multiplies the bandwith by 2 to offer a fabulously broad 4.2 GBs of  
memory bandwidth! (At least two of three DDR DIMM modules must be  
installed to activate this feature.)  
OnboardAudio: Bundled with theASUSACR-A6CH card for superlative audio  
support complete with two AC97 CODEC chips. Multiple audio outputs are  
available, including S/PDIF_OUT digital audio plus connectors for 6-Channel  
speaker systems.  
APU: The chipset has an integrated APU (Audio Processing Unit) that provides  
6-Channel AC97 compliant 3D positional audio and Dolbydigital encoding.  
C.O.P. Thermal Protection: WithAMD® Athlon XPinstalled, the motherboard  
offers users ASUS C.O.P. automatic CPU Overheating Protection to prolong the  
life of the entire system. If the CPU temperature exceeds 95º Celsius, the PC  
shuts down automatically.  
ACPI Ready: Advanced Configuration Power Interface (ACPI) provides more  
Energy Saving Features for operating systems that support OS Direct Power  
Management (OSPM) functionality. With these features employed in the OS,  
PCs can be ready around the clock but comply with energy saving standards. To  
fully utilize theACPI benefits, use anACPI-supported OS such as Windows XP.  
PC99 Compliant: Both the BIOS and hardware levels of ASUS smart series  
motherboards are PC99 compliant. The new PC99 requirements for systems  
and components are based on the following high-level goals: Support for Plug-  
n-Play compatibility and power management to configure and manage all system  
components. in all major OS systems. Color-coded connectors and descriptive  
icons make identification easy as required by PC99.  
ASUS A7N266-E Users Manual  
10  
2. FEATURES  
Two Onboard LEDs: 1)Agreen LED lights up to indicate that power is available  
onboard. It reminds users that standby power is available. The LED also serves  
as a reminder to disconnect the power supply when making any change to the  
configuration. 2) A red onboard warning LED lights up only if the wrong type  
of AGP card is connected to the board.  
Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI master  
busses to the memory and processor.  
SMBus: Features the System Management Bus interface used to physically  
transport commands and information between SMBus devices.  
Desktop Management Interface (DMI): Supports DMI through BIOS that  
allows hardware to communicate within a standard protocol and create a higher  
level of compatibility. (Requires DMI-enabled components.)  
EnhancedACPI andAnti-Boot Virus Protection: Programmable BIOS (Flash  
EEPROM) that offers enhancedACPI for Windows XP/2000/ME compatibility,  
built-in firmware-based virus protection, and autodetection of most devices for  
a virtual automatic setup.  
Chassis Intrusion Detection: Supports chassis-intrusion monitoring through  
the ASUS ASIC. A chassis intrusion event is kept in memory on battery power  
for more protection.  
PC Health Monitoring: Provides an easy way to test and manage system status  
information, such as CPU and system voltages, temperatures, and fan status  
through the onboard hardware ASUS ASIC and the bundled ASUS PC Probe.  
Dual Function Power Button: Pushing the power button for less than 4 seconds  
when the system is in the working state places the system into one of two states:  
sleep mode or soft-off mode, depending on the BIOS or OS setting (See PWR  
Button < 4 Secs in 4.5 Power Menu). When the power button is pressed for  
more than 4 seconds, the system enters the soft-off mode regardless of the BIOS  
setting.  
ASUS A7N266-E Users Manual  
11  
2. FEATURES  
2.2 Motherboard Components  
Location  
See opposite page for locations.  
Processor Support Socket A for AMD® AthlonXP, Athlonand DuronCPUs 1  
Chipsets nVidia® nForceIGP-128 North Bridge .................................. 2  
nVidia® nForceMCP-D South Bridge ................................. 12  
Multi-I/O controller .................................................................. 8  
2Mbit Programmable Flash EEPROM ..................................... 9  
Main Memory Maximum 1.5GB support  
3 DDR DIMM Sockets ............................................................. 3  
Expansion Slots 5 PCI Slots .............................................................................. 17  
1 Accelerated Graphics Port (AGP) Pro/4X Slot ................... 19  
1 Advanced Communication Riser (ACR) Slot ..................... 15  
System I/O 1 Floppy Disk Drive Connector ............................................... 7  
2 IDE Connectors (UltraDMA/100 Support) ........................... 6  
1 Parallel Port ............................................................... (Top) 22  
1 VGA Port ............................................................. (Bottom) 21  
1 Serial Port (COM1) ............................................. (Bottom) 23  
1 Serial Header (COM2) ....................................................... 10  
USB Connectors (Port 0 & Port 1) ........................ (Bottom) 24  
USB Headers (Ports 2/3/4/5) .................................................. 13  
Infrared Header (IrDA) .......................................................... 11  
1 PS/2 Mouse Connector .............................................. (Top) 25  
1 PS/2 Keyboard Connector ................................... (Bottom) 25  
Hardware Monitoring ASUS System Voltage Monitor (with ASUS ASIC) .............. 14  
Network Feature (Network Models only)  
Realtek LAN Chip controller ................................................ 16  
LAN (RJ-45) Connector ............................................... (Top) 24  
Audio Features  
1 Game/MIDI Port........................................................ (Top) 20  
ACR-A6CH Audio card: See p. 29 and 30 for more info.  
Power ATX Power Supply Connector ................................................. 4  
Onboard Power LED .................................................. (Green) 5  
Onboard AGP Warning LED ........................................ (Red) 18  
Form Factor ATX  
ASUS A7N266-E Users Manual  
12  
2. FEATURES  
2.2.1 Component Locations  
1
2
3
4 5 6  
25  
24  
23  
22  
21  
20  
19  
18  
7
8
9
17  
16  
10  
15  
14 13 12  
11  
ASUS A7N266-E Users Manual  
13  
3. HARDWARE SETUP  
3.1 Motherboard Layout  
24.5cm (9.64in)  
USBPWR01  
A7N266-E  
PS/2  
T: Mouse  
B: Keyboard  
CPU_FAN  
Socket 462  
1
1
1
Bottom:  
Top:  
CHA_FAN  
USB1  
USB2  
RJ-45  
COM1  
VDDR  
PLED  
nVidia  
nForce  
IGP-128  
Chipset  
VGA  
®
0
1
2
3
4
5
JEN  
BSEL0  
BSEL1  
NB_FAN  
Accelerated Graphics Port (AGP Pro)  
CR2032 3V  
Lithium Cell  
CMOS Power  
WARNING  
PCI 1  
PCI 2  
PCI 3  
PCI 4  
nVidia  
MCP-D  
2Mb  
BIOS  
Chipset  
Super  
I/O  
COM2  
CLRTC  
VID1  
VID2  
VID3  
VID4  
JTPWR  
BUZZER  
IDELED  
IR  
USBPWR45  
USBPWR23  
USB23  
SMB  
PCI 5  
ACR  
CHASSIS  
USB45  
PANEL  
(Grayed components are optional at the time of purchase.)  
ASUS A7N266-E Users Manual  
14  
3. HARDWARE SETUP  
3.2 Layout Contents  
Motherboard Settings  
1) LED  
p. 17 Onboard System Indicators (Green:power / Red:AGPwarning)  
p. 18 Jumperfree Setting (Enable / Disable)  
2) JEN  
3) BSEL0, BSEL1  
4) VID1, 2, 3, 4  
5) VDDR  
p. 18 CPU:DRAM Frequency Setting (100:100, 100:133, 133:100, 133:133)  
p. 19 Voltage Regulator Output Volt. Setting (1.675V-1.85 V)  
p. 19 DDR Voltage Setting (2.7V, 2.6V, 2.5V)  
6) USB01 / USB23 / USB45PWR p. 20 USB Device Wake-up (+5V / +5VSB)  
7) CLR_RTC  
p. 20 Clear RTC RAM (3 pin jumper)  
Expansion Slots/Sockets  
1) DIMM 1/2/3  
p. 21 System Memory Support  
2) Socket 462  
3) PCI 1/2/3/4/5  
4) AGP Pro  
5) ACR  
p. 24 CPU Support  
p. 25 32-bit PCI Bus Expansion Slots  
p. 28 Accelerated Graphics Port Slot  
p. 29 Advanced Communication Riser slot / ACR-A6CH  
Connectors  
1) PS2KBMS  
p. 31 PS/2 Mouse Port (6 pin female)  
2) PS2KBMS  
3) USB  
p. 31 PS/2 Keyboard Port (6 pin female)  
p. 32 Universal Serial Bus Ports 1 & 2 (Two 4 pin female)  
p. 32 Parallel Port (25 pin female)  
4) PRINTER  
5) RJ-45  
p. 32 Fast Ethernet Port Connector (9 pin male)  
p. 33 Serial Port / Header (9 pin male, 10-1 pin male)  
p. 33 VGA Port (15 pin female)  
6) COM 1 / 2  
7) VGA  
8) GAME  
9) IDELED  
10) FLOPPY  
p. 34 Game/MIDI Port (15 pin female) (optional)  
p. 35 IDE Activity LED (2 pin)  
p. 35 Floppy Disk Drive Connector (34 pin)  
11) PRIMARY / SEC. IDE p. 36 IDE Connectors (Two 40-1 pin)  
12) CPU, NB, CHA_FAN  
13) IrDA  
p. 37 CPU, NB, and Chassis Fan Connectors (Three 3 pin)  
p. 38 Infrared Connector (10-1 pin)  
14) ATXPWR  
15) CHASSIS  
16) USB_23 / USB_45  
17) JTPWR  
p. 39 Power Supply Connectors (20 pin block)  
p. 40 Chassis Open Alarm Lead (4 pin)  
p. 40 USB Headers (10-1 pin)  
p. 41 Power Supply Thermal Sensor Connector (2 pin)  
p. 41 SMBus Connector (5-1 pin)  
18) SMB  
ASUS A7N266-E Users Manual  
15  
3. HARDWARE SETUP  
19) PWR.LED  
20) KEYLOCK  
21) SPEAKER  
22) LED  
p. 42 System Power LED Lead (3 pin)  
p. 42 System Keyboard Lock Switch Lead (2 pin)  
p. 42 System Warning Speaker Lead (4 pin)  
p. 42 System Message LED Lead (2 pin)  
p. 42 System Management Interrupt Lead (2 pin)  
p. 42 ATX / Soft-Off Switch Lead (2 pin)  
p. 42 Reset Switch Lead (2 pin)  
23) SMI  
24) PWR  
25) RESET  
3.3 Hardware Setup Procedure  
Complete these procedures before powering up the computer:  
1. Check motherboard settings  
2. Install memory modules  
3. Install the Central Processing Unit (CPU)  
4. Install Expansion Cards  
5. Connect ribbon cables, panel wires, and power supply cables  
6. Configure the BIOS parameter settings  
All pertinent information to configure settigns and power up the computer for the  
first time appears in the following pages.  
ASUS A7N266-E Users Manual  
16  
3. HARDWARE SETUP  
3.4 Motherboard Settings  
This section tells you how to change motherboard function settings through the  
switches and/or jumpers.  
WARNING! Computer motherboards and expansion cards contain very delicate  
Integrated Circuit (IC) chips. To avoid damaging them due to static electricity,  
follow these precautions whenever you work on your computer.  
1. Unplug the computer when working on the internal components.  
2. Use a grounded wrist strap or touch a safely grounded object or to a metal  
object, such as the power supply case, before handling computer components.  
3. Hold components by the edges and try not to touch the IC chips on them.  
4. Whenever you uninstall any component, place the components on a grounded  
antistatic pad or in the bag that came with the components.  
5. Before you install or remove any component, ensure that theATX power  
supply is switched off or the power cord is detached from the power  
supply. Failure to do so may cause severe damage to the motherboard,  
peripherals, and/or components.  
1) Onboard System Indicators (LED - Light Emitting Diodes)  
The GREEN onboard LED indicates that the system power is okay. This light  
also lights when the PC is in suspend or soft-off mode. The RED onboard warning  
LED lights up only if the wrong type of AGP card is connected to the board:  
(See AGP Pro, p. 28)  
A7N266-E  
PLED  
ON  
OFF  
Standby  
Power  
Powered  
Off  
®
WARNING  
ON  
OFF  
Incorrect  
AGP Card  
Correct  
AGP Card  
A7N266-E Onboard LED  
ASUS A7N266-E Users Manual  
17  
3. HARDWARE SETUP  
2) Jumperfree Setting (JEN)  
Normally, all changes to frequency settings can be made through BIOS  
immediately upon starting up the computer. Therefore, the default setting for  
this jumper, [2-3] enables easy BIOS adjustments. If the BSEL jumpers are  
used, it is necessary to set this JEN jumper to [1-2].  
A7N266-E  
JEN  
1 2  
2 3  
®
Disable  
Enable  
(Default)  
A7N266-E Jumper Mode Setting  
3) CPU:DRAM Frequency Setting (BSEL0, BSEL1)  
This jumper sets the external CPU:DRAM frequency ratio for normal operation.  
The default operates at 100:100 Mhz. Note: To make any changes to jumper  
speed settings, the JEN jumper must be set to [1-2].  
CPU DRAM  
BSEL0  
[1-2]  
[2-3]  
BSEL1  
[1-2]  
[1-2]  
JEN  
[1-2]  
[1-2]  
[1-2]  
[1-2]  
133  
133  
100  
100  
133  
100  
133  
100  
[2-3]  
[2-3]  
[1-2] (Default) [2-3] (Default)  
A7N266-E  
1 2 3  
1 2 3  
JEN  
BSEL0  
BSEL1  
JEN  
BSEL0  
BSEL1  
CPU 133MHz  
CPU 133MHz  
DRAM 133MHz  
DRAM 100MHz  
®
1 2 3  
JEN  
1 2 3  
JEN  
BSEL0  
BSEL0  
BSEL1  
BSEL1  
CPU 100MHz  
CPU 100MHz  
DRAM 133MHz  
DRAM 100MHz  
(Default)  
A7N266-E CPU  
External Frequency Selection  
ASUS A7N266-E Users Manual  
18  
3. HARDWARE SETUP  
4) Voltage Regulator Output Setting (VID1, VID2, VID3, VID4)  
This jumpers allow you to manually adjust the CPU core voltage. It is  
recommended to use CPU Default as the CPU core voltage. CPU Default means  
the Vcore is generated according to the CPU VID configuration. For each jumper  
setting, there are two voltage options, depending on the CPU used.  
A7N266-E  
1 2 3 4  
1 2 3 4  
1 2 3 4  
VID1  
VID2  
VID3  
VID4  
VID1  
VID2  
VID3  
VID4  
VID1  
VID2  
VID3  
VID4  
(CPU Default)  
1.85/1.825Volts  
1.80/1.775Volts  
®
1 2 3 4  
1 2 3 4  
VID1  
VID2  
VID3  
VID4  
VID1  
VID2  
VID3  
VID4  
1.75/1.725Volts  
1.70/1.675Volts  
A7N266-E CPU Core Voltage  
Selection  
5) DDR Voltage Setting (VDDR)  
This jumper controls the voltage output to the DDR memory DRAMS. Less  
strain is placed on components at lower voltage settings.  
Setting  
2.7V  
2.6V  
VDDR  
[1-2]  
[2-3] (default)  
[3-4]  
2.5V  
A7N266-E  
VDDR  
®
1
2
2
3
3
4
2.5V  
2.6V  
2.7V  
(Default)  
A7N266-E VDDR Setting  
ASUS A7N266-E Users Manual  
19  
3. HARDWARE SETUP  
6) USB Device Wake-up (USB01PWR / USB23PWR / USB45PWR)  
Set these jumpers to +5V to allow wake up from the S1 sleep state (CPU stopped;  
RAM refreshed; system running in low power mode). The default setting for  
the three jumpers is [1-2] to select +5V, since not all computers have the  
appropriate power supply.  
NOTE: This feature requires an ATX power supply that can supply at least 2A  
on the +5VSB lead when these jumpers are set to +5VSB. Otherwise, the system  
does not power up. The total current consumed must NOT exceed the power  
supply capability (+5VSB) for normal working conditions or in sleep mode.  
A7N266-E  
USBPWR01  
1 2  
+5V  
2 3  
+5VSB  
®
(Default)  
USBPWR45  
USBPWR23  
1 2  
2 3  
+5V  
(Default)  
+5VSB  
A7N266-E USB Device Wake Up  
7) Clear RTC RAM (2-pin CLR_RTC)  
This jumper allows you to reset the Real Time Clock (RTC) RAM in CMOS.  
The RAM data in CMOS, that include system setup information such as system  
passwords, is powered by the onboard button cell battery. Erase the RTC RAM:  
1.  
2.  
3.  
Turn OFF the computer and unplug the power cord.  
Remove the battery.  
Change the jumper from normalto clear CMOSfor a few seconds  
then replace the jumper cap to the normalposition.  
Re-install the battery.  
4.  
5.  
6.  
Plug the power cord and turn ON the computer.  
Hold down the <Del> key during boot-up to enter BIOS setup.  
A7N266-E  
®
CLRTC  
1 2  
2 3  
Clear CMOS  
Normal  
(Default)  
A7N266-E Clear RTC RAM  
ASUS A7N266-E Users Manual  
20  
3. HARDWARE SETUP  
3.5 System Memory  
3.5.1 DDR DIMM Support  
The three DDR DIMM sockets support 2.5Volt (power level) Double Data Rate  
Synchronous Dynamic RandomAccess Memory (DDR SDRAM) of 64MB, 128MB,  
256MB and 512MB to form a memory size between 64MB to 1.5GB. One side (with  
memory chips) of the DIMM takes up one row on the motherboard.  
TwinBankTechnology: to function at 128-bit, 4.2 GB/second Dual channel DDR  
mode, at least 2 or more DIMM modules must be installed; with only one DIMM  
installed, the memory functions at only 64-bit, normal mode.  
~ DDR DIMMs on this motherboard support only 184-pin, unbuffered, non-ECC  
memory. DDR DIMMs with CAS Latency of 2.0 (PC2100A) or 2.5 (PC2100B) are  
both supported. (See the General DIMM memo on page 27 for details.)  
Configuration Rules:  
1. DIMMs must be populated consecutively, in order, starting with DIMM Socket  
1, then 2 and 3.  
2. The total number of banks must not exceed five: ie.: two dual load modules and  
one single load module. Note: Do not populate DIMM Socket 3 with any dual  
load modules.  
Memory Population:  
Memory loads must be distributed according to the various possible combinations  
shown in the following table:  
Capacity  
128 MB  
192 MB  
256 MB  
DIMM 1 (A0)  
DIMM2 (B0)  
DIMM3 (B1)  
64MB - 1B or 2B  
128MB - 1B or 2B  
64MB - 1B or 2B  
64MB - 1B or 2B  
X
X
X
128MB - 1B or 2B 128MB - 1B or 2B  
128MB - 1B or 2B  
256MB - 1B or 2B 128MB - 1B or 2B  
128MB - 1B or 2B 128MB - 1B or 2B 128MB - 1B  
256MB - 1B or 2B 256MB - 1B or 2B  
256MB - 1B or 2B 128MB - 1B or 2B 128MB - 1B  
512MB - 1B or 2B 256MB - 1B or 2B  
256MB - 1B or 2B 256MB - 1B or 2B 256MB - 1B  
512MB - 1B or 2B 512MB - 1B or 2B  
64MB - 1B or 2B 64MB - 1B  
384 MB  
512 MB  
786 MB  
1 GB  
X
X
X
X
512MB - 1B or 2B 256MB - 1B or 2B 256MB - 1B  
512MB - 1B or 2B 512MB - 1B or 2B 256MB - 1B  
512MB - 1B or 2B 512MB - 1B or 2B 512MB - 1B  
1.25 GB  
1.5 GB  
Table Legend:  
1B = 1 bank: a single load module.  
2B = 2 bank: a dual load module.  
ASUS A7N266-E Users Manual  
21  
3. HARDWARE SETUP  
3.5.2 Memory Installation  
WARNING! Make sure that you unplug your power supply when adding or  
removing memory modules or other system components. Failure to do so may  
cause severe damage to both your motherboard and expansion cards (see 3.3  
Hardware Setup Procedure for more information).  
Insert the module(s) as shown. Because the number of pins are different on either  
side of the breaks, the module will only fit in the orientation shown. A 184-pin DDR  
DRAM DIMM has a single notch slightly to the right of center.  
A7N266-E  
104 Pins  
80 Pins  
®
A7N266-E 184-Pin DDR  
DIMM Sockets  
Installing a DIMM:  
1. Unlock a DIMM socket by pressing the retaining clips outward.  
2. Align a DIMM on the socket such that the notches on the DIMM exactly  
match the notches in the socket.  
3. Firmly insert the DIMM into the socket until the retaining clips snap back in  
place.  
Unlocked Retaining Clip  
Locked Retaining Clip  
22  
ASUS A7N266-E Users Manual  
3. HARDWARE SETUP  
Removing a DIMM:  
1. Simultaneously press the retaining clips outward to unlock the DIMM.  
2. Carefully remove the DIMM from the socket.  
3.5.4 General DIMM Memo  
See the Configuration Rules on page 21 for essential installation parameters.  
DIMMs that have more than 18 chips are not supported on this motherboard.  
ASUS motherboards support SPD (Serial Presence Detect) DIMMs. This is the  
memory of choice for best performance vs. stability.  
BIOS shows DDR RAM memory on bootup screen.  
This motherboard supports three pairs of differential clock signals per DIMM.  
Single load DDR DIMMs are available in 64, 128, and 256MB; dual load modules  
are available in 128, 256, and 512MB.  
ASUS A7N266-E Users Manual  
23  
3. HARDWARE SETUP  
3.6 Central Processing Unit (CPU)  
The motherboard provides a Socket 462 or SocketAfor CPU installation. Afan and  
heatsink should be attached to the CPU to prevent overheating.  
LOCK  
A7N266  
CPU NOTCH  
TO INNER  
CORNER  
LEVER  
®
CPU NOTCH  
AMDAthlon  
A7N266 Socket 462  
1. Locate the Socket 462 and open it by pulling  
the lever gently sideways away from the socket.  
Then lift the lever upwards. The socket lever  
must be fully opened (90 to 100 degrees).  
2. Insert the CPU with the correct orientation. The  
notched corner of the CPU must be oriented  
toward the inner corner of the socket base  
nearest to the lever hinge.  
CAUTION! The CPU should drop easily into  
place. Do not force the CPU into the socket to  
avoid bending the pins. If the CPU does not fit,  
check its alignment and look for bent pins.  
3. Once completely inserted, press the CPU firmly  
and close the socket lever until it snaps shut.  
4. Place the CPU fan and heatsink on the CPU. The heatsink should entirely cover  
the CPU. Carefully attach the heatsink locking brace to the plastic clips on the  
socket base. With the added weight of the CPU fan and heatsink locking brace,  
no extra force is required to keep the CPU in place.  
CAUTION! Take care not to scrape the motherboard surface when mounting a  
clamp-style processor fan, or else damage may occur. When mounting a heatsink  
onto your CPU, make sure that exposed CPU capacitors do not touch the  
heatsink, or damage may occur!  
NOTE! Do not neglect to set the correct Bus Frequency and leave the CPU  
Multiple setting at default to avoid start-up problems.  
24  
ASUS A7N266-E Users Manual  
3. HARDWARE SETUP  
3.7 Expansion Cards  
In the future, you may need to install expansion cards. The motherboard has five  
PCI expansion slots to support these cards. Follow the steps in the next section  
when installing expansion cards.  
WARNING! Unplug the system power cord when adding or removing expansion  
cards or other system components. Failure to do so may cause severe damage to  
both the motherboard and expansion cards.  
3.7.1 Installing an Expansion Card  
1. Read the documentation that comes with the expansion card and make any  
necessary hardware settings for the card before installing it.  
2. Remove the system unit cover and the bracket plate on the slot you intend to use.  
Keep the screw for later use.  
3. Align the card connectors with the slot and press firmly until the card fits in  
place.  
4. Secure the card to the slot with the screw you removed earlier.  
5. Replace the system cover.  
6. Change the necessary BIOS settings, if any.  
(see section 4.4.3 PCI Configuration to change the settings.)  
7. Install the necessary software drivers for the expansion card.  
ASUS A7N266-E Users Manual  
25  
3. HARDWARE SETUP  
3.7.2 Assigning IRQs for Expansion Cards  
Some expansion cards need an IRQ to operate. Generally, an IRQ must be  
exclusively assigned to one use. In a standard design, there are 16 IRQs  
available but most of them are already in use, leaving 6 IRQs free for  
expansion cards. If your motherboard has PCI audio onboard, an additional  
IRQ will be used. If your motherboard also has MIDI enabled, another IRQ  
will be used, leaving 4 IRQs free.  
IMPORTANT: If using PCI cards on shared slots, make sure that the drivers  
support Share IRQor that the cards do not need IRQ assignments. Conflicts  
arise between the two PCI groups that will make the system unstable or  
cards inoperable.  
The following table lists the default IRQ assignments for standard PC devices.  
Use this table when configuring your system and for resolving IRQ conflicts.  
Standard Interrupt Assignments  
IRQ  
0
1
Priority  
Standard Function  
System Timer  
Keyboard Controller  
1
2
2
N/A  
11  
12  
13  
14  
15  
3
4
5
6
7
Programmable Interrupt  
Communications Port (COM2)  
Communications Port (COM1)  
Sound Card (sometimes LPT2)  
Floppy Disk Controller  
Printer Port (LPT1)  
System CMOS/Real Time Clock  
ACPI Mode when used  
IRQ Holder for PCI Steering  
IRQ Holder for PCI Steering  
PS/2 Compatible Mouse Port  
Numeric Data Processor  
Primary IDE Channel  
3*  
4*  
5*  
6
7*  
8
9*  
10*  
11*  
12*  
13  
14*  
15*  
8
9
10  
Secondary IDE Channel  
*These IRQs are usually available for ISA or PCI devices.  
26  
ASUS A7N266-E Users Manual  
3. HARDWARE SETUP  
Interrupt Request Table for this Motherboard  
INT-A  
shared  
shared  
INT-B  
INT-C  
shared  
INT-D  
shared  
INT-E  
PCI slot 1  
PCI slot 2  
PCI slot 3  
PCI slot 4  
PCI slot 5  
AGP  
used  
used  
ACR slot  
LAN controller  
USB controller  
shared  
shared  
shared  
ASUS A7N266-E Users Manual  
27  
3. HARDWARE SETUP  
3.7.3 Accelerated Graphics Port (AGP) Pro Slot  
This motherboard has an Accelerated Graphics Port (AGP) Pro slot to support the  
new generation graphics cards with ultra-high memory bandwidth.  
A7N266-E  
AGP Card without Retention Notch  
®
TOP VIEW  
28-pin bay  
20-pin bay  
Rib (inside slot)  
Rib  
A7N266-E Accelerated  
Graphics Port (AGP PRO)  
CAUTION! TheAGP Pro slot is shipped with a warning label over the 20-pin bay.  
DO NOT remove this label and the safety tab underneath it if  
you are using an AGP card without a retention notch. Removing  
may cause the card to shift and may cause damage to the card,  
slot, and motherboard. Remove the label and tab ONLY if you  
are using an AGP Pro card. Use a rigid tip, such as a pen tip, to  
Removing the tab  
dislodge the white tab.  
An early 3.3V AGP card:  
Do not use.  
A new 1.5 / 3.3V AGP card:  
OKAY to use.  
IMPORTANT: Only 1.5V AGP cards are supported. ASUS® AGP 4X cards are  
rated for both 1.5 and 3.3 Volts. EarlyAGPcards only operate at 3.3 volts and will  
not fit properly into the new AGP 4X slots. See examples of both types above. If  
the wrong type of AGP card is installed, such as an SiS305, or any other 3.3V  
AGP card, the onboard RED warning LED lights up immediately. So long as the  
LED is illuminated and the wrong card remains installed, the system power will  
not turn on, an automatic safety precaution to prevent damage to the motherboard.  
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ASUS A7N266-E Users Manual  
3. HARDWARE SETUP  
3.7.4 Advanced Communications Riser (Slot)  
This motherboard supplies an Advanced Communication Riser (ACR) slot for  
communications and audio systems. The A7N266-E motherboard is bundled with  
an innovative digital audio resource, the ACR-A6CH card. This super-connector  
card includes two AC97 audio CODEC chips that supply 6-channel audio output.  
The ACR-A6CH produces an S/PDIF_OUT digital audio signal with help from the  
nVidiaMCP-D south bridge. The ACR-6CH offers standard output formats for  
modem and audio:  
1
ACR-A6CH Layout  
2
3
4
5
6
7
8
9
Internal Connectors  
Telephone answering device (TAD) 4 pin male ................................................... 1  
CD audio-in (CD_IN) 4 pin male ......................................................................... 2  
Auxillary line-in (AUX_IN) 4 pin male ............................................................... 3  
External Connectors  
Digital audio output (S/PDIF_OUT) RCA jack .................................................... 4  
Microphone input (MIC_IN) Pink jack ................................................................ 5  
Audio input (LINE_IN) Light blue jack ............................................................... 6  
Front channel audio output (FRONT_SPK) Lime jack ........................................ 7  
Rear channel audio output (REAR_SPK) Purple jack ......................................... 8  
Center/Low Frequency Effect audio output (CNTR/LFE) Orange jack .............. 9  
ASUS A7N266-E Users Manual  
29  
3. HARDWARE SETUP  
ACR-A6CH Hardware Installation Procedure  
1. Power OFF your computer.  
2. Carefully align the ACR-A6CH cards connector to the ACR slot (PCI 6) and  
press firmly so that the slot receives all the teeth evenly along the entire length  
of the card.  
3. Secure the ACR card onto the PC chassis with a chassis screw.  
4. Connect the three black internal connectors (TAD, CD_IN, AUX_IN) with the  
appropriate leads as required. Connect the external connectors to audio output  
and recording devices as required.  
NOTE: The card below is pictured front side up; ensure that the colored connectors  
are positioned to face the outside edge of the motherboard.  
A7N266-E  
®
A7N266-E Advanced  
Communication Riser (ACR)  
IMPORTANT: Only theASUS ACR-A6CHAudio Communications Riser card is  
recommended for use with this motherboard in the ACR slot. It is impossible to  
install another card in the adjacent PCI slot since they are using the same space.  
30  
ASUS A7N266-E Users Manual  
3. HARDWARE SETUP  
3.8 Connectors  
3.8.1 External Connectors  
WARNING! Some pins are used for connectors or power sources. These are  
clearly distinguished from jumpers in the Motherboard Layout. Placing jumper  
caps over these connector pins will cause damage to your motherboard.  
IMPORTANT: Ribbon cables should always be connected with the red stripe to  
Pin 1 on the connectors. Pin 1 is usually on the side closest to the power connector  
on hard drives and CD-ROM drives, but may be on the opposite side on floppy  
disk drives. Check the connectors before installation because there may be  
exceptions. IDE ribbon cable must be less than 46 cm (18 in.), with the second  
drive connector no more than 15 cm (6 in.) from the first connector.  
1) PS/2 Mouse Port (Green 6-pin PS2KBMS)  
The system automatically directs IRQ12 to the PS/2 mouse if one is detected. If  
no mouse is detected, IRQ12 become available to expansion cards. See PS/2  
Mouse Function Control in 4.4 Advanced Menu.  
PS/2 Mouse (6-pin female)  
2) PS/2 Keyboard Port (Purple 6-pin PS2KBMS)  
This connection is for a standard keyboard using an PS/2 plug (mini DIN). This  
connector does not allow standardAT size (large DIN) keyboard plugs. You  
may use a DIN to mini DIN adapter on standard AT keyboards.  
PS/2 Keyboard (6-pin female)  
ASUS A7N266-E Users Manual  
31  
3. HARDWARE SETUP  
3) Universal Serial Bus Ports 1 & 2 (Black two 4-pin USB)  
Two USB ports are available for connecting USB devices.  
Universal Serial Bus (USB)  
4) Parallel Port (Burgundy 25-pin PRINTER)  
You can enable the parallel port and choose the IRQ through Onboard Parallel  
Port (see 4.4.2 I/O Device Configuration).  
NOTE: Serial printers must be connected to the serial port.  
Parallel (Printer) Port (25-pin female)  
5) Fast Ethernet Port (RJ-45) (Optional)  
The RJ-45 connector is located on top of the USB connectors. The USB connector  
supplies a direct connection to a local area network (LAN) and is supported by  
the onboard LAN controller chipset.  
RJ-45  
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ASUS A7N266-E Users Manual  
3. HARDWARE SETUP  
6) Serial Port Connectors (Teal/Turquoise 9-pin COM1, 10-1 pin COM2)  
One serial port is ready for a mouse or other serial devices. A second serial port  
is available using a serial port bracket connected from the motherboard to an  
expansion slot opening. See Onboard Serial Port 1/2 in 4.4.2 I/O Device  
Configuration for settings.  
COM 1  
Serial Port (9-pin male)  
A7N266-E  
COM2  
®
PIN 1  
A7N266-E Serial COM2 Bracket  
7) Monitor Output Connector (Blue 15-pin VGA)  
This connector supports output to a VGA compatible screen device.  
VGA Monitor (15-pin female)  
ASUS A7N266-E Users Manual  
33  
3. HARDWARE SETUP  
8) Game/MIDI Ports (Gold 15-pin GAME) (Optional)  
This connector supports a joystick or a game pad for playing games, and MIDI  
devices for playing or editing audio files.  
Joystick/MIDI (15-pin female)  
34  
ASUS A7N266-E Users Manual  
3. HARDWARE SETUP  
9) IDE Activity LED (2-pin IDELED)  
This connector supplies power to the cabinets IDE activity LED. Read and  
write activity by devices connected to the Primary or Secondary IDE connectors  
cause the IDE LED to light up.  
A7N266-E  
®
IDELED  
TIP: If the case-mounted LED does not  
light, try reversing the 2-pin plug.  
A7N266-E IDE Activity LED  
10) Floppy Disk Drive Connector (34-1 pin FLOPPY)  
This connector supports the provided floppy drive ribbon cable.After connecting  
the single end to the board, connect the two plugs on the other end to the floppy  
drives. (Pin 5 is removed to prevent inserting in the wrong orientation when  
using ribbon cables with pin 5 plugged).  
A7N266-E  
®
NOTE: Orient the red markings on  
the floppy ribbon cable to PIN 1  
PIN 1  
A7N266-E Floppy Disk Drive Connector  
ASUS A7N266-E Users Manual  
35  
3. HARDWARE SETUP  
11) Primary (Blue) / Secondary IDE Connectors (40-1 pin IDE1/IDE2)  
These connectors support the UltraDMA/100/66 IDE hard disk ribbon cable  
supplied with the motherboard. Connect the cables blue connector to the primary  
(recommended) or secondary IDE connector, then connect the gray connector to  
the UltraDMA/100/66 slave device (hard disk drive) and the black connector to  
the UltraDMA/100/66 master device. It is recommended that non-UltraDMA/  
100/66 devices be connected to the secondary IDE connector. If you install two  
hard disks, you must configure the second drive as a slave device by setting its  
jumper accordingly. Refer to the hard disk documentation for the jumper settings.  
BIOS supports specific device bootup (see 4.6 Boot Menu). If you have more  
than two UltraDMA/100/66 devices, purchase another UltraDMA/100/66 cable.  
NOTES:  
1. Pin 20 on each IDE connector is removed to match the covered hole on the  
UltraDMA cable connector. This prevents incorrect orientation when you  
connect the cables.  
2. The hole near the blue connector on the UltraDMA/100/66 cable is  
intentional.  
TIP: You may configure two hard disks to be both Masters with two ribbon  
cables: one for the primary IDE connector and another for the secondary  
IDE connector.  
IMPORTANT: For UltraDMA/100/66 IDE devices,use a 40-pin 80-conductor IDE  
cable. The UltraDMA/66 cable included in the motherboard package also  
supports UltraDMA/100.  
A7N266-E  
NOTE: Orient the red markings  
(usually zigzag) on the IDE  
ribbon cable to PIN 1.  
®
PIN 1  
A7N266-E IDE Connectors  
36  
ASUS A7N266-E Users Manual  
3. HARDWARE SETUP  
12) CPU Fan, North Bridge Fan, and Chassis Fan Connectors  
(CPU, NB, CHA_FAN)  
The three fan connectors support cooling fans of 350mA (4.2 Watts) or less.  
Orient the fans so that the heat sink fins allow airflow to go across the onboard  
heat sinks instead of the expansion slots. The fan wiring and plug may vary.  
Connect the fan cable to the connector making sure that the black wire matches  
the ground pin. NOTE: Use the Rotationsignal only with a specially designed  
fan with a rotation signal. Monitor Rotations Per Minute (RPM) using ASUS PC  
Probe (see section 6. SOFTWARE REFERENCE).  
WARNING! Make sure to connect the fan cables to the fan connectors. Lack of  
sufficient airflow within the system could cause damage to the motherboard.  
These are not jumpers, do not place jumper caps over these connectors!  
A7N266-E  
GND  
+12V  
Rotation  
CHA_FAN  
CPU_FAN  
NB_FAN  
GND  
+12V  
Rotation  
®
GND  
+12V  
Rotation  
A7N266-E 12-Volt Cooling Fan Power  
ASUS A7N266-E Users Manual  
37  
3. HARDWARE SETUP  
13) Infrared Connector (10-1 pin IrDA)  
This connector supports an optional wireless transmitting and receiving infrared  
module to the CIR and SIR connectors for both wireless transmitting and remote  
control functions through an external infrared module. This connector supports  
an optional wireless transmitting and receiving infrared module. This module  
mounts to a small opening on system cases that support this feature. You must  
also configure the setting through UART2 Use Infrared (see 4.4.2 I/O Device  
Configuration) to select whether UART2 is directed for use with COM2 or  
IrDA. Use the five pins as shown in Back View and connect a ribbon cable from  
the module to the motherboard SIR connector according to the pin definitions.  
(NOTE: The SIR module does not come with the motherboard package.)  
A7N266-E  
SIR  
CIR  
Standard Infrared (SIR)  
Front View Back View  
®
IR_CON  
+5V  
(NC)  
IRTX  
GND  
IRRX  
A7N266-E Infrared Connector  
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3. HARDWARE SETUP  
14) Power Supply Connectors (20-pin block ATXPWR)  
This connector supplies to an ATX 12V power supply. The plug from the power  
supply fits in only one orientation because of the different hole sizes. Find the  
proper orientation and push down firmly making sure that the pins are aligned.  
IMPORTANT: Make sure that the ATX 12V power supply (minimum  
recommended wattage: 230W) can supply at least 10mA on the +5-volt standby  
lead (+5VSB). The system may become unstable and may experience difficulty  
powering up if the power supply is inadequate. For Wake-On-LAN support, the  
ATX power supply must supply at least 720mA +5VSB.  
A7N266-E  
ATXPWR  
+3.3VDC  
-12.0VDC  
COM  
+3.3VDC  
+3.3VDC  
COM  
®
PS_ON#  
COM  
+5.0VDC  
COM  
COM  
COM  
+5.0VDC  
COM  
-5.0VDC  
+5.0VDC  
+5.0VDC  
PWR_OK  
+5VSB  
+12.0VDC  
A7N266-E ATX Power Connector  
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39  
3. HARDWARE SETUP  
15) Chassis Open Alarm Lead (4-pin CHASSIS)  
This lead is designed for chassis intrusion detection. It requires an external  
detection mechanism such as a chassis intrusion monitor/sensor or microswitch.  
Opening the chassis triggers the sensor and a high-level signal is sent to this lead  
to record the chassis intrusion event. The event is then be processed by software  
such as LDCM. When not using the chassis intrusion lead, place a jumper cap  
over the pins to close the circuit.  
NOTE: Removing the chassis intrusion jumper without attaching any detectors  
prevents boot-up of the PC.  
A7N266-E  
CHASSIS  
®
1
A7N266-E Chassis Open Alarm Lead  
16) USB Headers (10-1 pin USB2_3, USB4_5)  
If the USB port connectors on the back panel are inadequate, two USB headers  
are available for four additional USB port connectors. Connect a 2-port USB  
connector set to a USB header and mount the USB bracket to an open slot in the  
chassis. (The USB connector set is optional and does not come with the  
motherboard package.)  
A7N266-E  
USB45  
USB23  
®
10  
6
1
10  
6
1
5
5
A7N266-E Front Panel USB Headers  
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3. HARDWARE SETUP  
17) Power Supply Thermal Sensor Connector (2-pin JTPWR)  
If you have a power supply with thermal monitoring, connect its thermal sensor  
cable to this connector.  
A7N266-E  
®
JTPWR  
JTPWR  
Ground  
A7N266-E Power Supply Thermal Connector  
18) SMBus Connector (5-1 pin SMB)  
This connector allows you to connect SMBus (System Management Bus) devices.  
SMBus devices communicate by means of the SMBus with an SMBus host  
and/or other SMBus devices. SMBus is a specific implementation of an I2C bus,  
a multi-device bus that allows multiple chips to connect to the same bus and  
enabling each one to act as a master by initiating data transfer.  
A7N266-E  
®
SMB  
1
A7N266-E SMBus Connector  
ASUS A7N266-E Users Manual  
41  
3. HARDWARE SETUP  
The following 20-pin PANEL illustration is for items 19-25.  
A7N266-E  
Keyboard Lock  
Power LED  
Speaker  
Connector  
®
Reset SW  
Message LED  
SMI Lead  
ATX Power  
Switch*  
*
Requires an ATX power supply.  
A7N266-E System Panel Connectors  
19) System Power LED Lead (3-1 pin PWR.LED)  
This 3-1 pin connector connects to the system power LED. The LED lights up  
when you turn on the system power, and blinks when the system is in sleep or  
soft-off mode.  
20) Keyboard Lock Switch Lead (2-pin KEYLOCK)  
This 2-pin connector connects to the case-mounted key switch to allow keyboard  
locking.  
21) System Warning Speaker Lead (4-pin SPEAKER)  
This 4-pin connector connects to the case-mounted speaker and allows you to  
hear system beeps and warnings.  
22) System Message LED Lead (2-pin LED)  
This 2-pin connector is for the system message LED that indicates receipt of  
messages from a fax/modem. The normal status for this LED is ON, when there  
is no incoming data signal. The LED blinks when data is received. The system  
message LED feature requires an ACPI OS and driver support.  
23) System Management Interrupt Lead (2-pin SMI)  
This 2-pin connector allows you to manually place the system into a suspend  
mode, or Greenmode, where system activity is instantly decreased to save  
power and to expand the life of certain system components. Attach the case-  
mounted suspend switch this 2-pin connector.  
24) ATX Power Switch / Soft-Off Switch Lead (2-pin PWR)  
The system power is controlled by a momentary switch attached to this connector.  
Pressing the button switches the system between ON and SLEEP, or ON and  
SOFT OFF, depending on the BIOS or OS settings. Pressing the button while in  
the ON mode for more than 4 seconds turns the system off.  
25) Reset Switch Lead (2-pin RESET)  
This 2-pin connector connects to the case-mounted reset switch for rebooting  
the system without turning off the power switch. This is a preferred method.  
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3. HARDWARE SETUP  
3.9 Starting Up the First Time  
1. After all connections are made, close the system case cover.  
2. Be sure that all switches are off (in some systems, marked with ).  
3. Connect the power supply cord into the power supply located on the  
back of your system case according to your system users manual.  
4. Connect the power cord into a power outlet that is equipped with a surge  
protector.  
5. You may then turn on your devices in the following order:  
a. Your monitor  
b. External SCSI devices (starting with the last device on the chain)  
c. Your system power. For ATX power supplies, you need to switch on  
the power supply as well as press the ATX power switch on the front  
of the case.  
6. The power LED on the front panel of the system case will light. For  
ATX power supplies, the system LED will light when the ATX power  
switch is pressed. The LED on the monitor may light up or switch between  
orange and green after the systems if it complies with greenstandards  
or if it has a power standby feature. The system will then run power-on  
tests. While the tests are running, the BIOS will alarm beeps or additional  
messages will appear on the screen. If you do not see anything within 30  
seconds from the time you turn on the power, the system may have failed  
a power-on test. Recheck your jumper settings and connections or call  
your retailer for assistance.  
Award BIOS Beep Codes  
Beep  
Meaning  
One short beep when  
displaying logo  
No error during POST  
Long beeps in an endless loop  
One long beep followed by  
three short beeps  
No DRAM installed or detected  
Video card not found or video card  
memory bad  
High frequency beeps when  
system is working  
CPU overheated  
System running at a lower frequency  
ASUS A7N266-E Users Manual  
43  
3. HARDWARE SETUP  
7. During power-on, hold down <Delete> to enter BIOS setup. Follow the  
instructions in 4. BIOS SETUP.  
* Powering Off your computer: You must first exit or shut down your  
operating system before switching off the power switch. ForATX power  
supplies, you can press the ATX power switch after exiting or shutting  
down your operating system. If you use Windows 9X, click the Start  
button, click Shut Down, and then click Shut down the computer?  
The power supply should turn off after Windows shuts down.  
NOTE: The message You can now safely turn off your computerwill  
not appear when shutting down with ATX power supplies.  
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ASUS A7N266-E Users Manual  
4. BIOS SETUP  
4.1 Managing and Updating Your BIOS  
4.1.1 Upon First Use of the Computer System  
It is recommended that you save a copy of the original motherboard BIOS  
along with a Flash Memory Writer utility (AFLASH.EXE) to a bootable  
floppy disk in case you need to reinstall the BIOS later. AFLASH.EXE is a  
Flash Memory Writer utility that updates the BIOS by uploading a new  
BIOS file to the programmable flash ROM on the motherboard. This file  
works only in DOS mode. To determine the BIOS version of your  
motherboard, check the last four numbers of the code displayed on the upper  
left-hand corner of your screen during bootup. Larger numbers represent a  
newer BIOS file.  
1. Type FORMAT A:/S at the DOS prompt to create a bootable system  
disk. DO NOT copy AUTOEXEC.BAT and CONFIG.SYS to the disk.  
2. Type COPY D:\AFLASH\AFLASH.EXE A:\ (assuming D is your  
CD-ROM drive) to copy AFLASH.EXE to the boot disk you created.  
NOTE: AFLASH works only in DOS mode. It does not work in the DOS  
prompt within Windows and does not work with certain memory drivers  
that may be loaded when you boot from the hard drive. It is recommended  
that you reboot using a floppy disk.  
3. Reboot the computer from the floppy disk.  
NOTE: BIOS setup must specify Floppyas the first item in the boot  
sequence.  
4. In DOS mode, type A:\AFLASH <Enter> to run AFLASH.  
IMPORTANT! If the word unknownappears after Flash Memory:, the  
memory chip is either not programmable or is not supported by the ACPI BIOS  
and therefore, cannot be programmed by the Flash Memory Writer utility.  
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45  
4. BIOS SETUP  
5. Select 1. Save Current BIOS to File from the Main menu and press  
<Enter>. The Save Current BIOS To File screen appears.  
6. Type a filename and the path, for example, A:\XXX-XX.XXX and then  
press <Enter>.  
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4. BIOS SETUP  
4.1.2 Updating BIOS Procedures  
WARNING! Update the BIOS only if you have problems with the motherboard  
and you know that the new BIOS revision will solve your problems. Careless  
updating can result in your motherboard having more problems!  
1. Download an updated ASUS BIOS file from the Internet (WWW or  
FTP) (see ASUS CONTACT INFORMATION on page 3 for details)  
and save to the boot floppy disk you created earlier.  
2. Boot from the floppy disk.  
3. At the A:\prompt, type AFLASH and then press <Enter>.  
4. At the Main Menu, type 2 then press <Enter>. The Update BIOS  
Including Boot Block and ESCD screen appears.  
5. Type the filename of your new BIOS and the path, for example, A:\XXX-  
XX.XXX, then press <Enter>.  
NOTE: To cancel this operation, press <Enter>.  
6. When prompted to confirm the BIOS update, press Y to start the update.  
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47  
4. BIOS SETUP  
7. The utility starts to program the new BIOS information into the Flash  
ROM. The boot block is updated automatically only when necessary.  
This minimizes the possibilities of boot problems in case of update  
failures. When the programming is done, Flashed Successfully appears.  
8. Follow the onscreen instructions to continue.  
WARNING! If you encounter problems while updating the new BIOS, DO NOT  
turn off the system because this may cause boot problems. Just repeat the process,  
and if the problem still persists, load the original BIOS file you saved to the boot  
disk. If the Flash Memory Writer utility is not able to successfully update a  
complete BIOS file, the system may not boot. If this happens, call the ASUS  
service center for support.  
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ASUS A7N266-E Users Manual  
4. BIOS SETUP  
4.2 BIOS Setup Program  
This motherboard supports a programmable EEPROM that you can update using  
the provided utility described in 4.1 Managing and Updating Your BIOS.  
The utility is used if you are installing a motherboard, reconfiguring your system,  
or prompted to Run Setup. This section describes how to configure your system  
using this utility.  
Even if you are not prompted to use the Setup program, at some time in the future  
you may want to change the configuration of your computer. For example, you  
may want to enable the Security Password Feature or make changes to the power  
management settings. It will then be necessary to reconfigure your system using  
the BIOS Setup program so that the computer can recognize these changes and  
record them in the CMOS RAM of the EEPROM.  
The EEPROM on the motherboard stores the Setup utility. When you start up the  
computer, the system provides you with the opportunity to run this program. This  
appears during the Power-On Self Test (POST). Press <Delete> to call up the Setup  
utility. If you are a little bit late in pressing the mentioned key, POST will continue  
with its test routines, thus preventing you from calling up Setup. If you still need to  
call Setup, restart the system by pressing <Ctrl> + <Alt> + <Delete>, or by pressing  
the Reset button on the system chassis. You can also restart by turning the system  
off and then back on again. But do so only if the first two methods fail.  
The Setup program has been designed to make it as easy to use as possible. It is a  
menu-driven program, which means you can scroll through the various sub-menus  
and make your selections among the predetermined choices.  
To access the BIOS Setup program, press the <Delete> key after  
the computer has run through its POST.  
NOTE: Because the BIOS software is constantly being updated, the following  
BIOS setup screens and descriptions are for reference purposes only, and may  
not exactly match what you see on your screen.  
ASUS A7N266-E Users Manual  
49  
4. BIOS SETUP  
4.2.1 BIOS Menu Bar  
The top of the screen has a menu bar with the following selections:  
MAIN Use this menu to make changes to the basic system configuration.  
ADVANCED Use this menu to enable and make changes to the advanced  
features.  
POWER  
BOOT  
EXIT  
Use this menu to configure and enable Power Management  
features.  
Use this menu to configure the default system device used to locate  
and load the Operating System.  
Use this menu to exit the current menu or specify how to exit the  
Setup program.  
To access the menu bar items, press the right or left arrow key on the keyboard  
until the desired item is highlighted.  
4.2.2 Legend Bar  
At the bottom of the Setup screen is a legend bar. The keys in the legend bar allow  
you to navigate through the various setup menus. The following table lists the keys  
found in the legend bar with their corresponding functions.  
Navigation Key(s)  
<F1> or <Alt + H>  
Function Description  
Displays the General Help screen from anywhere in the BIOS  
Setup  
<Esc>  
Jumps to the Exit menu or returns to the main menu from a  
sub-menu  
or → (keypad arrow) Selects the menu item to the left or right  
or ↓ (keypad arrow)  
Moves the highlight up or down between fields  
- (minus key)  
Scrolls backward through the values for the highlighted field  
+ (plus key) or spacebar Scrolls forward through the values for the highlighted field  
<Enter>  
Brings up a selection menu for the highlighted field  
Moves the cursor to the first field  
<Home> or <PgUp>  
<End> or <PgDn>  
<F5>  
Moves the cursor to the last field  
Resets the current screen to its Setup Defaults  
Saves changes and exits Setup  
<F10>  
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4. BIOS SETUP  
General Help  
In addition to the Item Specific Help window, the BIOS setup program also provides  
a General Help screen. You may launch this screen from any menu by simply  
pressing <F1> or the <Alt> + <H> combination. The General Help screen lists the  
legend keys with their corresponding functions.  
Saving Changes and Exiting the Setup Program  
See 4.7 Exit Menu for detailed information on saving changes and exiting the  
setup program.  
Scroll Bar  
When a scroll bar appears to the right of a help window, it indicates that there is  
more information to be displayed that will not fit in the window. Use <PgUp> and  
<PgDn> or the up and down arrow keys to scroll through the entire help document.  
Press <Home> to display the first page, press <End> to go to the last page. To exit  
the help window, press <Enter> or <Esc>.  
Sub-Menu  
Note that a right pointer symbol (as shown in the left view)  
appears to the left of certain fields. This pointer indicates that  
you can display a sub-menu from this field. A sub-menu  
contains additional options for a field parameter. To display a  
sub-menu, move the highlight to the field and press <Enter>.  
The sub-menu appears. Use the legend keys to enter values  
and move from field to field within a sub-menu as you would  
within a menu. Use the <Esc> key to return to the main menu.  
Take some time to familiarize yourself with the legend keys and their corresponding  
functions. Practice navigating through the various menus and sub-menus. If you  
accidentally make unwanted changes to any of the fields, use the set default hot  
key <F5> to load the Setup default values. While moving around through the Setup  
program, note that explanations appear in the Item Specific Help window located  
to the right of each menu. This window displays the help text for the currently  
highlighted field.  
NOTE: The item heading in square brackets represents the default setting for  
that field.  
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51  
4. BIOS SETUP  
4.3 Main Menu  
When you enter the Setup program, the following screen appears:  
System Time [XX:XX:XX]  
Sets the system to the time that you specify (usually the current time). The  
format is hour, minute, second. Valid values for hour, minute and second  
are Hour: (00 to 23), Minute: (00 to 59), Second: (00 to 59). Use the  
<Tab> or <Shift> + <Tab> keys to move between the hour, minute, and  
second fields.  
System Date [XX/XX/XXXX]  
Sets the system to the date that you specify (usually the current date). The  
format is month, day, year. Valid values for month, day, and year are Month:  
(1 to 12), Day: (1 to 31), Year: (100 year range). Use the <Tab> or <Shift>  
+ <Tab> keys to move between the month, day, and year fields.  
Legacy Diskette A [1.44M, 3.5 in.], Legacy Diskette B [None]  
Sets the type of floppy drives installed. Configuration options: [None]  
[360K, 5.25 in.] [1.2M , 5.25 in.] [720K , 3.5 in.] [1.44M, 3.5 in.]  
[2.88M, 3.5 in.]  
Floppy 3 Mode Support [Disabled]  
This is required to support older Japanese floppy drives. The Floppy 3  
Mode feature allows reading and writing of 1.2MB (as opposed to  
1.44MB) on a 3.5-inch diskette. Configuration options: [Disabled]  
[Enabled]  
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4. BIOS SETUP  
4.3.1 Primary & Secondary Master/Slave  
Type [Auto]  
Select [Auto] to automatically detect an IDE hard disk drive. If automatic  
detection is successful, Setup automatically fills in the correct values for  
the remaining fields on this sub-menu. If automatic detection fails, this  
may be because the hard disk drive is too old or too new. If the hard disk  
was already formatted on an older system, Setup may detect incorrect  
parameters. In these cases, select [User Type HDD] to manually enter the  
IDE hard disk drive parameters. Refer to the next section for details.  
NOTE: After entering the IDE hard disk drive information into BIOS,  
use a disk utility, such as FDISK, to partition and format new IDE hard  
disk drives. This is necessary so that you can write or read data from the  
hard disk. Make sure to set the partition of the Primary IDE hard disk  
drives to active.  
CAUTION! Before attempting to configure a hard disk drive, make sure you  
have the configuration information supplied by the drive manufacturer. Incorrect  
settings may cause the system to fail to recognize the installed hard disk.  
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53  
4. BIOS SETUP  
[User Type HDD]  
Manually enter the number of cylinders, heads and sectors per track for the drive.  
Refer to the drive documentation or on the drive label for this information. If no  
drive is installed or if you are removing a drive and not replacing it, select [None].  
Translation Method [LBA]  
Select the hard disk drive type in this field. When Logical BlockAddressing (LBA)  
is enabled, 28-bit addressing of the hard drive disregarding cylinders, heads, or  
sectors. Note that LBA Mode is necessary for drives with more than 504MB storage  
capacity. Configuration options: [LBA] [LARGE] [Normal] [Match Partition Table]  
[Manual]  
Cylinders  
This field configures the number of cylinders. Refer to the drive documentation to  
determine the correct value to enter into this field. NOTE: To make changes to  
this field, set the Type field to [User Type HDD] and the Translation Method  
field to [Manual].  
Head  
This field configures the number of read/write heads. Refer to the drive documentation  
to determine the correct value to enter into this field. NOTE: To make changes to this  
field, set the Type field to [User Type HDD] and the Translation Method field to  
[Manual].  
Sector  
This field configures the number of sectors per track. Refer to the drive  
documentation to determine the correct value to enter into this field. NOTE: To  
make changes to this field, set the Type field to [User Type HDD] and the  
Translation Method field to [Manual].  
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4. BIOS SETUP  
CHS Capacity  
This field shows the drives maximum CHS capacity as calculated by the BIOS  
based on the drive information you entered.  
Maximum LBA Capacity  
This field shows the drives maximum LBA capacity as calculated by the BIOS  
based on the drive information you entered.  
Multi-Sector Transfers [Maximum]  
This option automatically sets the number of sectors per block to the highest number  
that the drive supports. Note that when this field is automatically configured, the set  
value may not always be the fastest value for the drive. You may also manually  
configure this field. Refer to the documentation that came with the hard drive to  
determine the optimum value and set it manually. NOTE: To make changes to this  
field, set the Type field to [User Type HDD]. Configuration options: [Disabled] [2  
Sectors] [4 Sectors] [8 Sectors] [16 Sectors] [32 Sectors] [Maximum]  
SMART Monitoring [Disabled]  
This filed allows you to enable or disable the S.M.A.R.T. (Self-Monitoring,Analysis  
and Reporting Technology) system that utilizes internal hard disk drive monitoring  
technology. This parameter is normally disabled because the resources used in the  
SMART monitoring feature may decrease system performance. Configuration  
options: [Disabled] [Enabled]  
PIO Mode [4]  
This option lets you set a PIO (Programmed Input/Output) mode for the IDE device.  
Modes 0 through 4 provide successively increased performance. Configuration  
options: [0] [1] [2] [3] [4]  
Ultra DMA Mode [Disabled]  
Ultra DMA capability allows improved transfer speeds and data integrity for compatible  
IDE devices. Set to [Disabled] to suppress Ultra DMA capability.  
NOTE: To make changes to this field, set the Type field to [User Type  
HDD]. Configuration options: [0] [1] [2] [3] [4] [5] [Disabled]  
Other options for the Type field are:  
[CD-ROM] - for IDE CD-ROM drives  
[LS-120] - for LS-120 compatible floppy disk drives  
[ZIP] - for ZIP compatible disk drives  
[MO] - for IDE magneto optical disk drives  
[Other ATAPI Device] - for IDE devices not listed here  
After making your selections on this sub-menu, press the <Esc> key to return  
to the Main menu. When the Main menu appears, the hard disk drive filed  
displays the size for the hard disk drive that you configured.  
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55  
4. BIOS SETUP  
4.3.2 Keyboard Features  
Boot Up NumLock Status [On]  
This field enables users to activate the Number Lock function upon system  
boot. Configuration options: [Off] [On]  
Keyboard Auto-Repeat Rate [6/Sec]  
This controls the speed at which the system registers repeated keystrokes.  
Options range from 6 to 30 characters per second. Configuration options:  
[6/Sec] [8/Sec] [10/Sec] [12/Sec] [15/Sec] [20/Sec] [24/Sec] [30/Sec]  
Keyboard Auto-Repeat Delay [1/4 Sec]  
This field sets the time interval for displaying the first and second characters.  
Configuration options: [1/4 Sec] [1/2 Sec] [3/4 Sec] [1 Sec]  
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4. BIOS SETUP  
Language [English]  
This field displays the BIOS language version.  
Supervisor Password [Disabled] / User Password [Disabled]  
These fields allow you to set passwords. To set a password, highlight the appropriate  
field and press <Enter>. Type in a password then press <Enter>. You can type up to  
eight alphanumeric characters. Symbols and other characters are ignored. To confirm  
the password, type the password again and press <Enter>. The password is now set to  
[Enabled]. This password allows full access to the BIOS Setup menus. To clear the  
password, highlight this field and press <Enter>. The same dialog box as above appears.  
Press <Enter>. The password is set to [Disabled].  
A Note about Passwords  
TheBIOSSetupprogramallowsyoutospecifypasswordsintheMainmenu.Thepasswords  
controlaccesstotheBIOSduringsystemstartup. Passwordsarenotcasesensitive, meaning,  
it makes no difference whether you the password using uppercase or lowercase letters.  
The BIOS Setup program allows you to specify two different passwords: a Supervisor  
password and a User password. If you did not set a Supervisor password, anyone can  
access the BIOS Setup program. If you did, the Supervisor password is required to enter  
the BIOS Setup program and to gain full access to the configuration fields.  
Forgot the Password?  
If you forget your password, you can clear it by erasing the CMOS Real Time Clock (RTC)  
RAM. The RAM data containing the password information is powered by the onboard button  
cell battery. (See Motherboard Settings for a diagram of the jumper location.)  
To erase the RTC RAM:  
1. Turn OFF the computer and unplug the power cord.  
2. Remove the battery.  
3. Short the jumper.  
4. Re-install the battery.  
5. Plug the power cord and turn ON the computer.  
6. Hold down the <Del> key during the boot process and enter BIOS  
setup to re-enter data.  
Halt On [All Errors]  
This field specifies the types of errors that will cause the system to halt. Configuration  
options: [All Errors] [No Error] [All but Keyboard] [All but Disk] [All but Disk/  
Keyboard]  
Installed Memory [XXX MB]  
This field automatically displays the amount of conventional memory detected by the  
system during the boot process.  
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4. BIOS SETUP  
4.4 Advanced Menu  
Current CPU Speed  
This field displays the internal frequency of your CPU. In JumperFree mode,  
it is possible to change the speed of processors by adjusting the CPU/PCI  
multiple.  
CPU Speed [Manual]  
When the motherboard is set to JumperFreemode, this field sets the  
internal frequency of your CPU. Select [Manual] if you want to make  
changes to the next two fields. Note that selecting a frequency higher than  
the CPU manufacturer recommends may cause the system to hang or crash.  
Configuration options: [Manual] [Various frequencies]  
CPU Frequency Multiple [9.5x]  
This field is for unlocked processors only and will not be available to standard  
AMD processors. For unlocked processors, this field sets the frequency  
multiple between the CPUs internal frequency (CPU speed) and the external  
frequency. (Set this field in conjunction with the CPU/PCI Frequency (MHz)  
to match the speed of the CPU.) Configuration options: [5x] [5.5x]  
[6.0x]...[12.0x] [12.5x]  
CPU/PCI Frequency (MHz) [100/33]  
This feature tells the clock generator which frequency to send to the system  
bus and PCI bus. The bus frequency (external frequency) multiplied by the  
bus multiple equals the CPU speed. Increasing the ratio will increase the  
CPU Speed; the user must reboot the computer after making adjustments to  
this field. Configuration options: [103/33] ... [158/33].  
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CPU/Memory Frequency Ratio [Auto]  
This field determines whether the memory clock frequency is set to be in  
synchronous or asynchronous mode with respect to the memory frequency.  
The options that appear in the popup menu vary according to the status of  
the CPU/PCI Frequency (MHz) field. Configuration options: [1:1] [3:4]  
CPU Level 1 Cache, CPU Level 2 Cache [Enabled]  
These fields allow you to choose from the default of [Enabled] or choose  
[Disabled] to turn on or off the CPU Level 1 and Level 2 built-in cache.  
Configuration options: [Disabled] [Enabled]  
CPU Level 2 Cache ECC Check [Enabled]  
This function controls the ECC capability in the CPU level 2 cache.  
Configuration options: [Disabled] [Enabled]  
BIOS Update [Enabled]  
This field functions as an update loader integrated into the BIOS to supply  
the processor with the required data. When set to [Enabled], the BIOS loads  
the update on all processors during system bootup. Configuration options:  
[Disabled] [Enabled]  
PS/2 Mouse Function Control [Auto]  
The default setting [Auto] allows the system to detect a PS/2 mouse at startup.  
If a mouse is detected, the BIOS assigns IRQ12 to the PS/2 mouse. Otherwise,  
IRQ12 can be used for expansion cards. When you set this field to [Enabled],  
BIOS always reserves IRQ12, whether or not a PS/2 mouse is detected at  
startup. Configuration options: [Enabled] [Auto]  
USB Legacy Keyboard Support [Disabled]  
This motherboard supports Universal Serial Bus (USB) devices. The default  
of [Disabled] allows the system to detect a USB device at startup. The other  
two fields [Primary] and [Secondary] are used for selecting which of two  
sets of ports. Users should select [Disabled] or [Primary] to activate a  
USB-type keyboard connection to a new system. Configuration options:  
[Disabled] [Primary] [Secondary]  
OS/2 Onboard Memory > 64M [Disabled]  
When using OS/2 operating systems with installed DRAM of greater than  
64MB, you need to set this option to [Enabled]. Otherwise, leave to the  
default setting [Disabled]. Configuration options: [Disabled] [Enabled]  
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4. BIOS SETUP  
Summary of Warning Messages  
The system may crash or hang up due to conflicts between settings and  
CPU compatibility: checksum errors, improper frequency settings, change  
of CPU and improper CPU speed settings. The system starts up in safe  
mode running at a bus speed of 100MHz and enters the BIOS Setup. Each  
time a system hangup occurs, BIOS interrupts the bootup process with a  
specific warning message. These messages always appear on the right side  
of the BIOS screen in red print:  
1. Cause for Hangup: Checksum Error Warning  
The CMOS checksum is incorrect. Please reload the cmos default  
value.To solve this problem, clear the CMOS RTC memory (see pages  
20 and 57) and then reenter the default values in the Exit menu and  
restart the system.  
2. Cause for Hangup: Improper System Frequency  
Last time you failed to change the frequency of the system. It may  
place the system into an unstable state. Now the system is in safe mode  
at the slowest CPU speed. Please set the system frequency again.To  
solve this problem, a slower frequency is more likely to obtain stable  
start-ups.  
CPU Upgrade/Reinstallation  
To ensure that the system can enter BIOS Setup after replacing the processor,  
the system starts up running at a bus speed of 100MHz and a fail-safe CPU  
internal frequency. Then it automatically enters the Advanced menu with a  
popup display of all the possible CPU internal frequencies for the particular  
CPU presently installed:  
3. Cause for Hangup: Improper CPU Speed 1  
During the last bootup, your system hung for an improper CPU Speed  
setting. Your system is now working in safe mode. To optimize the  
system performance and stability, make sure the CPU speed conforms  
to the specifications of your CPU.”  
4. Cause for Hangup: Improper CPU Speed 2  
Since you are using a new CPU or have reinstalled your CPU, the system  
boots up at the slowest CPU bus frequency to make sure the system can  
enter setup menu. Now, you can adjust the CPU speed as you wish. If  
the speed is adjusted too high, the system may hang. Please turn off the  
system and then restart to set the CPU speed.”  
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4. BIOS SETUP  
4.4.1 Chip Configuration  
SDRAM Configuration [By SPD]  
This sets the optimal timing. The default setting is [By SPD], which  
automatically configures the timing by reading the contents in the SPD (Serial  
Presence Detect) device. The EEPROM on the memory module stores critical  
parameter information about the module, such as memory type, size, speed,  
voltage interface, and module banks. Configuration options: [User Defined]  
[By SPD]  
NOTE: The subfield below only be used if the SDRAM Configuration can  
be changed to [User Defined].  
SDRAM CAS Delay [Auto (Normal)]  
Sets the latency between the SDRAM active command and the read/  
write command. Configuration options: [Auto (Normal)] [2.0T (Normal)]  
[2.5T (Normal)] [Auto (TURBO)] [2.0T (TURBO)] [2.5T (TURBO)]  
Clock Spread Spectrum Mode [Center Spread]  
Not available in this model. Configuration options: [Center Spread] [Spread  
Down] [Disabled]  
VGA Shared Memory Size [32MB]  
This feature sets the size of mapped memory for VGA monitor data.  
Configuration options: [8MB] [16MB] [32MB]  
Graphics Aperture Size [64MB]  
This feature sets the size of mapped memory for AGP graphic data.  
Configuration options: [32MB] [64MB] [128MB] [256MB] [512MB]  
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4. BIOS SETUP  
Internal Graphic Over-clocking [Disable]  
This feature permits the grapical processor to participate in over-clocking.  
Remember to disable this feature if installing an AGP card to the  
motherboard. Configuration options: [Disable] [Enable]  
VGA LCD TV Display Type [Auto]  
The system automatically detects and sets up screen-type compatibility.  
Configuration options: [Auto]  
Video Memory Cache Mode [UC]  
USWC (uncaheable, speculative write combining) is a new cach technology  
for the processors video memory. It can greatly improve the display speed  
by caching the display data. Set this to UC (uncacheable) if the display card  
cannot support this feature; otherwise, the system may not boot up.  
Configuration options: [UC] [USWC]  
Onboard VGA BIOS Update [Enabled]  
Configuration options: [Enabled] [Disabled]  
MCP IDE Controller [Both]  
Configuration options: [Both] [Primary] [Secondary] [Disabled]  
MCP USB Controller [Enabled]  
Both USB controllers are enabled by default. Refer to USB Legacy  
Keyboard support for specifying which ports are used to enable USB  
keyboard support. Configuration options: [Enabled] [Disabled]  
MCP Audio Controller [Auto]  
Configuration options: [Disabled] [Auto]  
MCP DOLBY DIGITAL Controller [Auto]  
Only available on theA7N266-E. Configuration options: [Disabled] [Auto]  
PCI 2.1 Support [Enabled]  
Configuration options: [Disabled] [Enabled]  
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4. BIOS SETUP  
4.4.2 I/O Device Configuration  
Onboard FDC Swap A & B [No Swap]  
This field allows you to reverse the hardware drive letter assignments of  
your floppy disk drives. Configuration options: [No Swap] [Swap AB]  
Floppy Disk Access Control [R/W]  
Set this field to read and write the floppy disk (R/W). Change to [Read  
Only] for reading disks.  
Onboard Serial Port 1 [3F8H/IRQ4]  
Onboard Serial Port 2 [2F8H/IRQ3]  
These fields allow you to set the addresses for the onboard serial connectors.  
Serial Port 1 and Serial Port 2 must have different addresses. Configuration  
options: [3F8H/IRQ4] [2F8H/IRQ3] [3E8H/IRQ4] [2E8H/IRQ10]  
[Disabled]  
UART2 Use Standard Infrared [Disabled]  
This field can activate the onboard standard infrared feature and sets the second  
serial UART to support the infrared module connector on the motherboard.  
See IrDA-Compliant Infrared Module Connector in 3.8 Connectors.  
Configuration options: [Disabled] [Enabled]  
Onboard Parallel Port [378H/IRQ7]  
This field sets the address of the onboard parallel port connector. If you disable  
this field, the Parallel Port Mode and ECP DMA Select configurations are  
not available. Configuration options: [Disabled] [378H/IRQ7] [278H/IRQ5]  
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4. BIOS SETUP  
Parallel Port Mode [ECP+EPP]  
This field allows you to set the operation mode of the parallel port. [Normal]  
allows normal-speed operation but in one direction only; [EPP] allows  
bidirectional parallel port operation; [ECP] allows the parallel port to operate  
in bidirectional DMA mode; [ECP+EPP] allows normal speed operation in  
a two-way mode. Configuration options: [Normal] [EPP] [ECP] [ECP+EPP]  
ECP DMA Select [3]  
This field allows you to configure the parallel port DMA channel for the  
selected ECP mode. This selection is available only if you select [ECP] or  
[ECP+EPP] in Parallel Port Mode above. Configuration options: [1] [3]  
[Disabled]  
Onboard Game Port [200H-207H]  
This field sets the I/O address to the game port. Configuration options:  
[200H-207H] [208H-20FH] [Disabled]  
Onboard MIDI [Disabled]  
This field sets the I/O address for MIDI. Configuration options: [330H-  
331H] [300H-301H] [Disabled]  
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4.4.3 PCI Configuration  
Slot 1/5, Slot 2, Slot 3, Slot 4 IRQ [Auto]  
These fields automatically assign the IRQ for each PCI slot. The default  
setting for each field is [Auto], which utilizes auto-routing to determine  
IRQ assignments. Configuration options: [Auto] [NA] [3] [4] [5] [7] [9]  
[10] [11] [12] [14] [15]  
PCI/VGA Palette Snoop [Disabled]  
Some non-standard VGA cards, such as graphics accelerators or MPEG  
video cards, may not show colors properly. Setting this field to [Enabled]  
corrects this problem. If you are using standard VGA cards, leave this  
field to the default setting [Disabled]. Configuration options: [Disabled]  
[Enabled]  
PCI Latency Timer [32]  
Leave this field to the default setting [32] for best performance and stability.  
Primary VGA BIOS [AGP VGA Card]  
This field allows you to select the primary graphics card. Select the [Onboard  
VGA Card] option for optimal graphical support. Configuration options:  
[AGP VGA Card] [Onboard VGA]  
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4. BIOS SETUP  
PCI DMA Resource Exclusion  
DMA x Reserved for Legacy Drive [No/ICU]  
These fields indicate whether or not the DMA channel displayed for each  
field is being used by a legacy (non-PnP) ISA card. The default setting  
indicates either that the DMA channel displayed is not used or an ICU is  
being used to determine if an ISA device is using the channel instead.  
Configuration options: [No/ICU] [Yes]  
PCI UMB Resource Exclusion  
TSM MEM Block BASE [No/ICU]  
This field allows yout to set the base address and block size of an onboard  
legacy ISA device that uses any memory segment within the C800 and DFFF  
address range. With such a device, select a base address from the options.  
If an ICU is already in use, then leave the TSM MEM Block BASE to its  
default setting of [No/ICU]. Configuration options: [No/ICU] [C800] [CC00]  
[D000] [D400] [D800] [DC00]  
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4. BIOS SETUP  
4.4.4 Shadow Configuration  
Video ROM BIOS Shadow [Enabled]  
This field allows you to change the video BIOS location from ROM to  
RAM. Relocating to RAM enhances system performance, as information  
access is faster than the ROM. Configuration options: [Disabled] [Enabled]  
C8000-DFFFF Shadow [Disabled]  
These fields are used for shadowing other expansion card ROMs. If you  
install other expansion cards with ROMs on them, you will need to know  
which addresses the ROMs use to shadow them specifically. Shadowing a  
ROM reduces the memory available between 640K and 1024K by the amount  
used for this purpose. Configuration options: [Disabled] [Enabled]  
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4. BIOS SETUP  
4.5 Power Menu  
The Power menu allows you to reduce power consumption. This feature turns off the  
video display and shuts down the hard disk after a period of inactivity.  
Video Off Option [Suspend -> Off ]  
This field determines when to activate the video off feature for monitor  
power management. Configuration options: [Always On] [Suspend -> Off]  
Video Off Method [DPMS OFF]  
This field defines the video off features. The DPMS (Display Power  
Management System) feature allows the BIOS to control the video display  
card if it supports the DPMS feature. [Blank Screen] only blanks the screen  
(use this for monitors without power management or greenfeatures. If set  
up in your system, your screen saver will not display with [Blank Screen]  
selected). [V/H SYNC+Blank] blanks the screen and turns off vertical and  
horizontal scanning. Configuration options: [Blank Screen] [V/H  
SYNC+Blank] [DPMS Standby] [DPMS Suspend] [DPMS OFF] [DPMS  
Reduce ON]  
HDD Power Down [Disabled]  
Shuts down any IDE hard disk drives in the system after a period of  
inactivity as set in this user-configurable field. This feature does not affect  
SCSI hard drives. Configuration options: [Disabled] [1 Min] [2 Min] [3  
Min]...[15 Min]  
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PWR Button < 4 Secs [Soft Off]  
When set to [Soft off], the ATX switch can be used as a normal system  
power-off button when pressed for less than 4 seconds. [Suspend] allows  
the button to have a dual function where pressing less than 4 seconds will  
place the system in sleep mode. Regardless of the setting, holding the ATX  
switch for more than 4 seconds will power off the system. Configuration  
options: [Soft off] [Suspend]  
4.5.1 Power Up Control  
AC PWR Loss Restart [Disabled]  
This allows you to set whether you want your system to reboot after the  
power has been interrupted. [Disabled] leaves your system off and [Enabled]  
reboots your system. [Previous State] sets your system back to the state it is  
before the power interruption. Configuration options: [Disabled] [Enabled]  
[Previous State]  
Power Up From P/S2 Keyboard [Space bar]  
Selecting [Space bar] enables power up from the keyboard space bar.  
Configuration options: [Space bar] [Disabled]  
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4. BIOS SETUP  
4.5.2 Hardware Monitor  
MB Temperature [xxxC/xxxF]  
CPU Temperature [xxxC/xxxF]  
POWER Temperature N/A  
The onboard hardware monitor automatically detects the MB (motherboard),  
CPU, and JTPWR (power supply) temperatures.  
CPU Fan Speed [xxxxRPM]  
CHIP Fan Speed [xxxxRPM]  
PWR Fan Speed N/A  
The onboard hardware monitor automatically detects the speeds of the CPU  
fan, chassis fan, and chassis fan measured in rotations per minute (RPM).  
VCORE1/VCORE2 Voltage  
+3.3V Voltage, +5V Voltage, +12V Voltage  
The onboard hardware monitor automatically detects the voltage output  
through the onboard voltage regulators.  
NOTE: If any of the monitored items is out of range, the following error  
message appears: Hardware Monitor found an error. Enter Power setup  
menu for details. You will then be prompted to Press F1 to continue or  
DEL to enter SETUP.  
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4. BIOS SETUP  
4.6 Boot Menu  
Boot Sequence  
The Boot menu allows you to select among the four possible types of boot  
devices listed using the up and down arrow keys. By using the <+> or <Space>  
key, you can promote devices and by using the <-> key, you can demote  
devices. Promotion or demotion of devices alters the priority which the system  
uses to search for a boot device on system power up. Configuration fields  
include Removable Devices, IDE Hard Drive, ATAPI CD-ROM, and Other  
Boot Device.  
Removable Device [Legacy Floppy]  
Configuration options: [Disabled] [Legacy Floppy] [LS120] [ZIP]  
[ATAPI MO]  
IDE Hard Drive  
This field allows you to select which IDE hard disk drive to use in the boot  
sequence. Pressing [Enter] will show the product IDs of all connected IDE  
hard disk drives.  
ATAPI CD-ROM  
This field allows you to select which ATAPI CD-ROM drive to use in the  
boot sequence. Pressing [Enter] will show the product IDs of all your  
connected ATAPI CD-ROM drives.  
Other Boot Device Select [INT18 Device (Network)]  
Configuration options: [Disabled] [SCSI Boot Device] [INT18 Device  
(Network)]  
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4. BIOS SETUP  
Boot Virus Detection [Enabled]  
This field allows you to set boot virus detection, ensuring a virus-free boot  
sector. The system halts and displays a warning message when it detects a  
virus. If this occurs, you can either allow the operation to continue or use a  
virus-free bootable floppy disk to restart and investigate your system.  
Configuration options: [Disabled] [Enabled]  
Quick Power On Self Test [Enabled]  
This field speeds up the Power-On-Self Test (POST) routine by skipping  
retesting a second, third, and fourth time. Configuration options: [Disabled]  
[Enabled]  
Boot Up Floppy Seek [Enabled]  
When enabled, the BIOS will seek the floppy disk drive to determine whether  
the drive has 40 or 80 tracks. Configuration options: [Disabled] [Enabled]  
Interrupt Mode [APIC]  
Configuration options: [APIC] [PIC]  
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4. BIOS SETUP  
4.7 Exit Menu  
When you have made all of your selections from the various menus in the  
Setup program, save your changes and exit Setup. Select Exit from the menu  
bar to display the following menu:  
NOTE: Pressing <Esc> does not immediately exit this menu. Select one of  
the options from this menu or <F10> from the legend bar to exit this menu.  
Exit Saving Changes  
Once you are finished making your selections, choose this option from the  
Exit menu to ensure the values you selected are saved to the CMOS RAM.  
The CMOS RAM is sustained by an onboard backup battery and stays on  
even when the PC is turned off. When selecting this option, a confirmation  
window appears. Select [Yes] to save changes and exit. Normally, as the  
system exits, a single beep confirms that the changes were saved. If three  
beeps sound consecutively, the system will restart with a pertinent warning  
message.  
NOTE: If you attempt to exit the Setup program without saving your  
changes, the program prompts with a message asking to save changes before  
exiting. Pressing <Enter> saves the changes while exiting.  
Exit Discarding Changes  
Select this option only if you do not want to save the changes to the Setup  
program. If you made changes to fields other than system date, system  
time, and password, BIOS asks for a confirmation before exiting.  
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4. BIOS SETUP  
Load Setup Defaults  
This option allows you to load the default values for each of the parameters  
on the Setup menus. When you select this option or if you press <F5>, a  
confirmation window appears. Select [Yes] to load default values. Select  
Exit Saving Changes or make other changes before saving the values to  
the non-volatile RAM.  
Discard Changes  
This option allows you to discard the selections you made and restore the  
previously saved values.After selecting this option, a confirmation appears.  
Select [Yes] to discard any changes and load the previously saved values.  
Save Changes  
This option saves your selections without exiting the Setup program. You  
can then return to other menus and make further changes. After you select  
this option, a confirmation window appears. Select [Yes] to save any changes  
to the non-volatile RAM.  
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5. SOFTWARE SETUP  
5.1 Install Operating System  
You should always use the latest operating system and updates when using new  
hardware to ensure full compliancy. You may use any version of Windows 98/2000/  
Millenium, but for Windows 95, you must use OSR 2.0 or later. For Windows NT  
4.0, you must use Service Pack 3.0 or later.  
5.2 Start Windows  
When you start Windows for the first time after installing your motherboard, Win-  
dows will detect all plug-and play devices. Follow the Add New Hardware Wizard  
to install all necessary device drivers. When prompted to restart, select No and then  
follow the setup procedures in this section.  
NOTE: Because there are various motherboard settings, options, and expansion  
cards, the following can only be used as a general reference and may not reflect  
exactly the screen contents displayed on your screen.  
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5. SOFTWARE SETUP  
5.3 A7N266-E Series Motherboard Support CD  
NOTE: The support CD contents are subject to change at any time without notice.  
To begin using your support CD disc, just insert it into your CD-ROM drive and the  
support CD installation menu should appear. If the menu does not appear, double-  
click or run D:\ASSETUP.EXE (assuming that your CD-ROM drive is drive D:).  
NOTE: If using the Windows 98 OS, the nVidia nForcesystem drivers and the  
audio driver for the ACR-A6CH audio card must be manually installed: see 5.3.3  
on page 78 and 79 for more information.  
5.3.1 Installation Menu  
NVIDIA nForce Drivers: Installs video drivers along with the nVidia Codec  
interface and the nForce MCP Audio Processing unit, necessary for driving the  
ACR-A6CH-Audio card. NOTE: The Windows ME OS must be used with these  
drivers. The nVidia® drivers do not support Windows NT OS. (Remember to  
uninstall all other INF drivers before installing nVidia® drivers on a previously  
used system.) If using Win98, it is necessary to install three system drivers and  
the audio driver manually: see page 78 and 79.  
NVIDIA Display Driver: Installs the drivers for nVidia®s integrated VGA  
displays. Turn off all anti-virus software before installation. The nVidia® driv-  
ers do not support Windows NT OS. (Remember to uninstall all other INF driv-  
ers before installing nVidia drivers on a previously used system.)  
Realtek RTL8139 Family PCI Fast Ethernet NIC Driver: Installs a fast  
ethernet driver for the onboard Realtek NIC.  
ASUS PC Probe: Installs a smart utility to monitor your computers fan, tem-  
perature, and voltages.  
InstallASUS Update: Instals a program that can help you update BIOS or down-  
load a BIOS image file.  
Microsoft DirectX Driver: Installs basic drivers to enable compatibility with  
audio and other special functions.  
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PC-CILLIN 2000: Installs the latest anti-virus protection application.  
ADOBE Acrobat Reader: Installs the Adobe Acrobat Reader software neces-  
sary to view users manuals saved in PDF format. Updated or other language  
versions of this motherboard's manual is available in PDF format at any of our  
web sites.  
Cyberlink Video and Audio Applications: Installs Cyberlink PowerPlayer SE  
and Cyberlink VideoLive Mail.  
ASUS Screen Saver: Installs a nifty ASUS screen saver.  
( CLICK RIGHT ARROW TO ACCESS NEXT PAGE )  
E-Color 3Deep: Installs graphical driver and an application for tuning the  
quality of color output from CRT and LCD monitors.  
Show Motherboard Information: Allows you to view information about your  
motherboard, such as product name, BIOS version, and CPU.  
Browse Support CD: Allows you to view the contents of the CD.  
ReadMe: Allows you to view the support CD file list and contact information.  
Exit: Exits the CD installation menu.  
( CLICK LEFTARROW TO RETURN )  
5.3.2 Installation Procedure  
On the Installation Items Menu, click on the name of the driver or program group  
to begin installation. Follow the instructions that appear on the setup screens.  
All drivers and programs install automatically. Refer to 6. Software Reference for  
operating instructions.  
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5. SOFTWARE SETUP  
5.3.3 Manual Installation of Drivers for Windows 98  
Use the Device Manager to uninstall all previously installed system drivers that may  
conflict with the installation and operation of the nVidia® system drivers .  
~ Three nVidia® drivers need to be installed to operate with the Win98 system. The  
installation procedure is described in items 1 through 3:  
1. PCI System Management Bus.  
2. PCI Standard Host CPU Bridge.  
3. PCI Standard RAM Controller.  
~ Two nVidia® drivers are needed to operate the 6-Channel ACR-A6CH audio card;  
the installation procedure is described in item 4, ACR-A6CH-Audio Card drivers.  
ITEM 1: PCI System Management Bus  
1. Go to the Device Manager.  
2. Select PCI System Management Busin Other Devices.”  
3. Click on Properties.”  
4. Click on Driver.”  
5. Select Update Driver.”  
6. Select Search for a better driver than the one your device is using nowoption.  
7. Click on Specify the locationand then type or browse for the path on the CD  
ROM Drive:\Drivers\Chipset\Nvidia\win9x\SMbus. This installs the driver.  
8. Click Next.”  
9. You should see that the PCI System Managementis detected.  
10. You do not need to restart if you need to install more drivers.  
11. Continue to install more drivers.  
ITEM 2: PCI Standard Host CPU Bridge (GART driver)  
1. Go to the Device Manager.”  
2. Select PCI standard Host CPU Bridgein System Devices”  
3. Click on Properties.”  
4. Click on Driver.”  
5. Select Update Driver.”  
6. Select Search for a better driver than the one your device is using nowoption.  
7. Click on Specify the locationand then type or browse for the path on the CD  
ROM Drive:\Drivers\Chipset\Nvidia\win9x\Gart. This installs the driver.  
8. Click Next.”  
9. You should see that the AGP Host to the PCI Bridgeis detected.  
10. There is no need to restart if you need to install more drivers.  
11. Continue to install the next driver.  
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5. SOFTWARE SETUP  
ITEM 3: PCI Standard Ram Controller  
1. Go to the Device Manager  
2. Select PCI standard RAM Controller in System Devices”  
3. Click on Properties.”  
4. Click on Driver.”  
5. Select update driver”  
6. Select Search for a better driver than the one your device is using nowoption.  
7. Click on Specify the locationand then type or browse for the path on the CD-  
ROM Drive:\Drivers\Chipset\Nvidia\win9x\MemoryController. This installs the  
driver.  
8. Click Next.”  
9. You should see two NVIDIA nForce 220/420 Memory Controllerand one  
NVIDIA nForce 420 Memory Controller (DDR)detected.  
10. There is no need to restart if you need to install more drivers.  
ITEM 4: ACR-A6CH-Audio Card drivers:  
nVidia Codec Interface and nForce MCP-D Audio Processing Unit  
After installing the OS, turn off the system and plug-in the ACR-A6CH-Audio card  
into PCI slot 6. Power on the system. Normally, the hardware wizard auto-detects  
new devices and prompts the user to browse for new drivers on the CD ROM; look  
for the audio INFs in these folders:  
\ Drivers \ Chipset \ Nvidia \ win9x \installer\ English \  
~ If the hardware wizard does not auto-detect, try clicking on Refreshin the  
Device Manager. If it still does not auto-detect, use the Add New Hardware  
Wizardto intall the audio drivers:  
1. Go to the Add Hardware Wizardand search for devices.  
2. Select: No, the device is not in the list.”  
3. Do you want Windows to search for your new hardware?Select, No, I want  
to select the hardware from a list.”  
4. Select: Sound, video and game controllers.”  
5. Then select the first generic item in the list, like Generic USB device.”  
6. Click Have Diskand browse to the CD-ROM drive: \ Drivers \ Chipset \  
Nvidia \ win9x \ installer\ English.  
7. The Openbox should display 6 INF files:  
Select the NVAUtils.inf.  
8. Click OKand select either the NVIDIA Codec Interfaceor the nForce  
MCP-D Audio Processing unit (Dolby® Digital).Repeat the process above for  
the second driver.  
9. After all drivers are installed, restart the PC.  
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6. SOFTWARE REFERENCE  
6.1 ASUS Live Update  
ASUS LiveUpdate is a utility that allows you to update your motherboards  
BIOS and drivers. The use of this utility requires that you are properly con-  
nected to the Internet through an Internet Service Provider (ISP).  
1. Start ASUS Update  
Launch the utility from your Windows Start  
menu:Programs/AsusUpdate  
2. Select an update method.  
3. If you selected updating/downloading  
from the Internet, you will need to select  
an Internet site. Choose the site that is  
closest to you or click Auto Select.  
4. From the FTP site, select the BIOS  
version that you wish to download. Click  
Next.  
5. Follow the instructions on the succeed-  
ing screens to complete the update  
process. If you selected the option to  
update the BIOS from a file, a window  
pops up prompting you to locate the file.  
Select the file, click Save, then follow the  
screen instructions to complete the update  
process.  
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6. SOFTWARE REFERENCE  
6.2 ASUS PC Probe  
ASUS PC Probe is a convenient utility to continuously monitor your  
computer systems vital components, such as fan rotations, Voltages, and  
temperatures. It also has a utility that lets you review useful information  
about your computer, such as hard disk space, memory usage, and CPU  
type, CPU speed, and internal/external frequencies through the DMI  
Explorer.  
6.2.1 Starting ASUS PC Probe  
WhenASUS PC Probe starts, a splash screen appears allowing you to select  
whether or not to show the screen the next time you open PC Probe. To  
bypass this startup screen, clear the Show up in next execution check box.  
To start ASUS PC Probe, click the Windows Start button, point to Pro-  
grams, and then ASUS Utility, and then click Probe Vx.xx.  
The PC Probe icon  
will appear on the taskbars system tray indicating  
that ASUS PC Probe is running. Clicking the icon will allow you to see the  
status of your PC.  
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6. SOFTWARE REFERENCE  
6.2.2 Using ASUS PC Probe  
Monitoring  
Monitor Summary  
Shows a summary of the items being  
monitored.  
Temperature Monitor  
Shows the PCs temperature.  
Temperature Warning  
threshold adjustment  
(Move the slider up to increase the  
threshold level or down to decrease  
the threshold level)  
Fan Monitor  
Shows the PCs fan rotation.  
Fan Warning  
threshold adjustment  
(Move the slider up to increase the  
threshold level or down to decrease  
the threshold level)  
Voltage Monitor  
Shows the PCs voltages.  
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Settings  
Lets you set threshold levels and polling  
intervals or refresh times of the PCs tem-  
perature, fan rotation, and voltages.  
CPU Cooling System Setup  
Lets you select when to enable software  
CPU cooling. When When CPU Over-  
heated is selected, the CPU cooling sys-  
tem is enabled whenever the CPU tem-  
perature reaches the threshold value.  
History  
Lets you record the current monitoring  
activity of a certain component of your  
PC for future reference.  
Information  
Hard Drives  
Shows the used and free space of the PCs  
hard disk drives and the file allocation  
table or file system used.  
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6. SOFTWARE REFERENCE  
Memory  
Shows the PCs memory load, memory  
usage, and paging file usage.  
Device Summary  
Shows a summary of devices in your PC.  
DMI Explorer  
Shows information pertinent to the PC,  
such as CPU type, CPU speed, and in-  
ternal/external frequencies, and memory  
size.  
Utility  
Lets you run programs outside of the  
ASUS Probe modules. To run a program,  
click Execute Program.  
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6. SOFTWARE REFERENCE  
6.2.3 ASUS PC Probe Task Bar Icon  
Right-clicking the PC Probe icon  
will bring up a menu to open or  
exitASUS PC Probe and pause or  
resume all system monitoring.  
When theASUS PC Probe senses  
a problem with your PC, portions  
of the ASUS PC Probe icon  
changes to red, the PC speaker  
beeps, and the ASUS PC Probe  
monitor is displayed.  
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6. SOFTWARE REFERENCE  
6.3 3Deep Color Tuner  
The 3-Deep color tuner is designed to match your CRT or LCD color  
monitor to maximize the color quality of all graphical applications. Users  
may also tune their internet applications to match trueinternet source  
colors with the color displayed on the monitor.  
Simply run the setup program from the start menu and follow the instruc-  
tions on the various setup/test screens.  
6.3.1 3Deep Color Tuning  
1. Select the type of monitor connected  
to the computer, either CRT or  
LCD.  
2. Follow the instructions to manually  
adjust the brightness level of the  
monitor.  
3. Select the faintest of the three  
colors: blue, red and green.  
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4. Select the color squares which most  
closely blend and match with the  
background.  
5. The next step repeats  
the color matching  
process to achieve full  
color quality.  
6. The tuning process is complete. Click on the bottom left button to  
connect to the internet and follow the instructions.  
6.3.2 The 3Deep Control Panel  
Using the Windows Start button, activate the 3Deep Control Panel  
program from the 3Deep Applications group on the Main Program menu.  
The control panel offers access to the  
Color Wizard tuning program, a  
Game Gamma setting and a Tweak  
slider for brightness adjustment.  
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6. SOFTWARE REFERENCE  
6.4 CyberLink PowerPlayer SE  
CyberLink PowerPlayer SE is an intelligent software player that can automatically  
detect and playback all kinds of video/audio files, CD and MP3 files as well. This is  
the only software you need for all types of video and audio files. No need to waste  
time identifying your file types.  
6.4.1 Starting CyberLink PowerPlayer SE  
To start CyberLink Power Player, click the Windows Start button, point  
to Programs, and then CyberLink PowerPlayer SE, and then click  
PowerPlayer.  
6.4.2 CyberLink PowerPlayer Control Panel  
Minimize  
Zoom  
Eject  
Help  
About  
Power Off  
Stop  
Backward Scan  
Forward Scan  
Step Frame  
Backstep Frame  
Previous  
Next  
Play  
Stop  
Configuration  
i-Power!  
Increase Volume  
CD Mode  
Shuffle  
Mute  
Decrease Volume  
Karaoke  
Next angle Next audio stream Next subtitle  
Add bookmark  
Capture frame  
Go-Up  
Repeat  
Menu  
Go to bookmark  
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6. SOFTWARE REFERENCE  
6.5 CyberLink VideoLive Mail  
CyberLinks VideoLive Mail Plus Ver 3.0 (a.k.a. VLM 3) is a convenient and excel-  
lent way to create professional quality video mails from PC video/audio input de-  
vices and to send the mails to any recipients via VLM 3s built-in e-mail system  
through the Internet. VLM 3s mails comprise video, sound, or snapshot informa-  
tion; and thus may convey the most profound information to target audiences. It is  
very convenient for mail recipients who do not need to install additional software  
component in order to view VLM 3 mails.  
VLM 3 works as a very applicant sales tool. It efficiently delivers profound and live  
product information to your target customers without costing a fortune. VLM 3 also  
helps corporate managers easily give vivid speeches and broadcast through corpo-  
rate E-mail system. For personal or home users, VLM 3 easily records live video  
clips allowing users to send them to friends or family members across the Internet.  
VLM 3 loads video messages from PC cameras, digital camcorders, analog camcorder  
via video capture cards, or from an existing AVI video clips, and captures audio  
messages from PC microphones. Video and audio messages are encoded at a very  
high compressed rate in a real-time mode. From data input, data conversion, to  
sending video mails via Internet, or saving data to disks, the whole procedure is  
done in an easy and continuous process.  
VLM 3s video clip compression rate is up to 1:900, and its playback rate is up to 30  
frame per second. VLM 3 provides CIF (352 x 288 pixel) display resolution, and  
support true color configuration. A one-minute video mail with QCIF (176 x 144)  
resolution takes up less than 500KB of memory, making it easy to transmit and save  
mail. Users may always adjust resolution and recording parameters for different  
purpose.  
VLM 3 supports all the hardware devices that are compliant with Video for Win-  
dows standard. Video for Windows is a well-accepted and well-tested standard. Thus,  
users do not have to worry about compatibility issues.  
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6. SOFTWARE REFERENCE  
6.5.1 Starting VideoLive Mail  
To start VideoLive Mail, click the Windows Start button, point to Programs, and  
then CyberLink VideoLive Mail, and then click VideoLive Mail x.x. VLM 3s  
Setup Wizard will start and guide you through configuring the video and audio input  
peripherals and to setup the e-mail environment.  
1. Setup Wizard first will prompt a dialog to confirm that you want to configure  
the hardware and E-mail setting. Click Yes to continue the system parameter  
configuration.  
2. The e-mail configuration screen appears. You will need to enter your name and  
the e-mail address. Click Next to continue.  
3. The Internet e-mail configuration screen appears. You may choose to use the  
VLM 3 built-in E-mail functionality (SMTP mail), or use MAPI compliant e-  
mail system. Consult your ISP or MIS staff for the E-mail server IP address if  
you are not sure. Click Next to continue.  
4. Then the Video Configuration screen shows up. You may have to specify the  
video driver for VLM 3, if there are several video-input devices installed. Then  
configure the number of video frames to be captured per second. Note that the  
more frames you choose, the bigger the file size will be. Click Next to continue.  
5. Then the Setup Wizard will then search for the GSM CODECS module for au-  
dio compression, and prompt you with the result. Click Next to continue.  
6. Setup Wizard then tests the audio volume during playing and recording. Click  
Next when ready.  
7. Configuration done. Click Finish to complete the environmental setting proce-  
dure.  
6.5.2 CyberLink VideoLive Mail User Interface  
Exit  
Minimize  
Help  
Video Mail Wizard  
Start Playback  
Save Video File  
Snapshot to File  
Stop Recording / Playback  
Start Recording  
Pause  
Send Mail  
Video Configuration  
Load Video File  
Send Mail  
Increase MIC volume  
Decrease MIC volume  
Increase speaker volume  
Decrease speaker volume  
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7. APPENDIX  
7.1 Glossary  
1394  
1394 is the IEEE designation for a high performance serial bus tht offers data transfers at 100/  
200/400 Mbps. This serial bus defines both a back plane physical layer and a point-to-point  
cable-connected virtual bus. The primary application of the cable version is the integration of  
I/O connectivity at the back panel of personal computers using a low-cost, scalable, high-  
speed serial interface. The 1394 standard also provides new services such as live connect/  
disconnect capability for external devices including disk drives, printers and hand-held pe-  
ripherals such as scanners and cameras. This is a new standard to complement the slower  
USB interface and to compete with the more expensive SCSI interface.  
AC97 (Audio Codec '97)  
AC '97 is the next step in enabling PCs with audio quality comparable to consumer electron-  
ics devices. The specification defines new cost-effective options to help integrate the compo-  
nents necessary to support next-generation auto-intensive PC applications such as DVD, 3-D  
multiplayer gaming and interactive music. The specification also defines new extensions sup-  
porting modem and docking to help both desktop and mobile manufacturers adopt these new  
technologies more quickly and cost-effectively. This specification uses software emulation to  
compete with the PCI SoundBlaster specification.  
ACPI (Advanced Configuration and Power Interface)  
The ACPI specification defines a cross-platform interface designed to support many operat-  
ing systems. ACPI defines a flexible and abstract hardware interface that provides a standard  
way to integrate power management features throughout a PC system, including hardware,  
operating system and application software. This enables the system to automatically turn ON  
and OFF peripherals such as CD-ROMs, network cards, hard disk drives, and printers, as well  
as consumer devices connected to the PC such as VCRs, TVs, phones, and stereos. With this  
technology, peripherals will also be able to activate the PC. For example, inserting a tape into  
a VCR can turn on the PC, which could then activate a large-screen TV and high-fidelity  
sound system.  
AGP (Accelerated Graphics Port)  
An interface specification that enables high-performance 3D graphics on mainstream PCs.  
AGP was designed to offer the necessary bandwidth and latency to perform texture mapping  
directly from system memory.  
Bus  
Bus Frequency  
Bandwidth  
Data Transfer Rate  
PCI  
33MHz  
66MHz  
66MHz  
66MHz  
33MHz  
66MHz  
133MHz  
266MHz  
133MByte/sec  
266MByte/sec  
512MByte/sec  
1024MByte/sec  
AGP 1X  
AGP 2X  
AGP 4X  
Backup. A copy of a file, directory, or volume on a separate storage device from the original.  
This copy is for the purpose of data retrieval in case the original is accidentally erased, dam-  
aged, or destroyed.  
BIOS (Basic Input/Output System)  
BIOS is a set of routines that affect how the computer transfers data between computer com-  
ponents, such as memory, disks, and the display adapter. The BIOS instructions are built into  
the computers read-only memory. BIOS parameters can be configured by the user through  
the BIOS Setup program. The BIOS can be updated using the provided utility to copy a new  
BIOS file into the EEPROM.  
Bit (Binary Digit)  
Represents the smallest unit of data used by the computer. A bit can have one of two values:  
0 or 1.  
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7. APPENDIX  
Boot  
Boot means to start the computer operating system by loading it into system memory. When  
the manual instructs you to bootyour system (or computer), it means to turn ON your  
computer. Rebootmeans to restart your computer. When using Windows 95 or later, select-  
ing Restartfrom Start | Shut Down...will reboot your computer.  
Bus Master IDE  
PIO (Programmable I/O) IDE requires that the CPU be involved in IDE access and waiting  
for mechanical events. Bus master IDE transfers data to/from the memory without interrupt-  
ing the CPU. Bus master IDE driver and bus master IDE hard disk drives are required to  
support bus master IDE mode.  
Byte (Binary Term)  
One byte is a group of eight contiguous bits. Abyte is used to represent a single alphanumeric  
character, punctuation mark, or other symbol.  
Cache Memory. A type of RAM that allows a faster from the CPU than a regular RAM. The  
cache memory eliminates the CPU wait state. When the CPU reads data from the main memory,  
a copy of this data is stored in the cache memory. The next time the same address, the data is  
transferred from the cache memory instead of from the main memory.  
CODEC (Compressor/Decompressor). A software component that translates video or au-  
dio between its uncompressed form and the compressed form in which it is stored.  
COM Port  
COM is a logical device name used by to designate the computer serial ports. Pointing de-  
vices, modems, and infrared modules can be connected to COM ports. Each COM port is  
configured to use a different IRQ and address assignment.  
Concurrent PCI  
Concurrent PCI maximizes system performance with simultaneous CPU, PCI and ISA bus  
activities. It includes multi-transaction timing, enhanced write performance, a passive release  
mechanism and support for PCI 2.1 compliant delayed transactions. Concurrent PCI provides  
increased bandwidth, reduced system latencies, improves video and audio performance, and  
improves processing of host based applications.  
CPU (Central Processing Unit)  
The CPU, sometimes called Processor,actually functions as the brainof the computer. It  
interprets and executes program commands and processes data stored in memory. Currently,  
there are socket 370 (for Pentium III FC-PGA and Celeron-PPGA), socket 7 (for Pentium,  
AMD, Cyrix, IBM), slot 1 (for Pentium II and III), slot 2 (for Xeon), and slot A (for AMD)  
processors.  
Device Driver  
A device driver is a special set of instructions that allows the computers operating system to  
communicate with devices such as VGA, audio, printer, or modem.  
DOS (Disk Operating System)  
DOS is the foundation on which all other programs and software applications operate, includ-  
ing Windows. DOS is responsible for allocating system resources such as memory, CPU  
time, disk space, and access to peripheral devices. For this reason, DOS constitutes the basic  
interface between you and your computer.  
DRAM (Dynamic Random Access Memory)  
A type of RAM that requires refresh cycles to prevent the loss of the data stored in it.  
There are several different types of DRAM such as, EDO DRAM (Extended Data Output  
DRAM), SDRAM (Synchronous DRAM), and RDRAM (Rambus DRAM) and DDR DRAM,  
(Double-Data Rate DRAM).  
Flash ROM  
non-volatile memory device that retains its data even when power is removed. This device is  
similar to EPROM, but unlike EPROM which can be erased only using an ultra-violet light,  
flash ROM can be electrically erased. Flash ROM is normally used for system BIOS, which  
initiates hardware devices and sets up necessary parameters for the OS. Since the flash ROM  
contents can be modified, users can easily update the BIOS..  
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IDE (Integrated Drive Electronics)  
IDE devices integrate the drive control circuitry directly on the drive itself, eliminating the  
need for a separate adapter card (in the case for SCSI devices). UltraDMA/33 IDE devices  
can achieve up to 33MB/Sec transfer.  
I/O (Input/Output)  
The data transfers from the input devices like a keyboard, mouse, or scanner, to the output  
devices like a printer or the monitor screen.  
I/O Address  
The specific memory location for a particular device. Two devices cannot share the same I/O  
address space.  
IrDA (Infrared Data Association)  
An internaltional organization that creates and promotes inter-operable, low cost, infrared  
data interconnection standards that support a walk-up, point-to-point model. The IrDA proto-  
col is designed to support transmission of data between two devices over short-range point-  
to-point infrared at speeds between 9.6Kbps and 4Mbps.  
ISP (Internet Service Provider)  
A company that provides customer access to the Internet and the World Wide Web for a fee.  
The ISP also provides Internet utilities and services like e-mail, newsgroup, weather reports,  
and a host of others. The user can connect to the ISP using a modem installed in the computer  
and connected to a phone line.  
LPT Port (Line Printer Port)  
Logical device name reserved by DOS for the computer parallel ports. Each LPT port is  
configured to use a different IRQ and address assignment.  
MMX  
A set of 57 new instructions designed to accelerate multimedia and communications applica-  
tions, such as 3D video, 3D sound, video conference.  
Modem  
A device that allows a computer to talk to another computer through the phone system.  
Network  
An interconnected computer system linked by telephone wires, or other means.  
OnNow  
The OnNow design initiative is a comprehensive, system-wide approach to system and de-  
vice power control. OnNow is a term for PC that is always ON but appears OFF and responds  
immediately to user or other requests. The OnNow design initiative involves changes that  
will occur in the Microsoft Windows operating system, device drivers, hardware, and appli-  
cations, and also relies on the changes defined in the Advanced Configuration and Power  
Interface (ACPI) specification.  
PC100/133  
This is an industry-standard designation for memory capacity as a measure of the speed of the  
memory bus. New platform requirements ensure that memory does not become a bottleneck  
to system performance.  
PCI Bus (Peripheral Component Interconnect Local Bus)  
PCI bus is a standard specification that defines a 32-bit data bus interface.  
PCI Bus Master  
The PCI Bus Master can perform data transfer without local CPU help and the CPU can be  
treated as one of the Bus Masters. PCI 2.1 supports concurrent PCI operation to allow the  
local CPU and bus master to work simultaneously.  
POST (Power On Self Test)  
Powering on the computer initiates the POST, a series of software-controlled diagnostic tests.  
The POST checks system memory, the motherboard circuitry, the display, the keyboard, the  
diskette drive, and other I/O devices  
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7. APPENDIX  
PS/2 Port  
PS/2 ports are based on IBM Micro Channel Architecture. This type of architecture transfers  
data through a 16-bit or 32-bit bus. A PS/2 mouse and/or keyboard may be used on ATX  
motherboards.  
RDRAM (Rambus DRAM)  
Developed by Rambus, Inc., this type of memory can deliver up to 1.6GB of data per second.  
RDRAM is the first interface standard that can be directly implemented on high performance  
VLSI components such as, CMOS DRAMs, memory controllers, and graphics/video ICs.  
RAM (RandomAccess Memory). The computers primary storage area used to write, store,  
and retrieve information and program instructions which are passed to the CPU for process-  
ing. The information in RAM can be repeatedly re-written with new data. Compared to other  
storage media like magnetic tape, floppy disk, and hard disk, RAM has an extraordinarily fast  
access rate. RAM, however, is volatile, which means that the data stored in it are lost when  
the system power is turned off, or if power glitches occur. See also DRAM and SDRAM.  
ROM (Read Only Memory)  
ROM is nonvolatile memory used to store permanent programs (called firmware) used in  
certain computer components. Flash ROM (or EEPROM) can be reprogrammed with new  
programs (or BIOS).  
SCSI (Small Computer System Interface)  
High speed multi-threaded I/O interface defined by the X3T9.2 committee of the American  
National Standards Institute (ANSI) for connecting many peripheral devices. The standard  
started from 10MBytes/sec to 160MBytes/sec available today.  
SDRAM (Synchronous DRAM)  
A type of DRAM with access signals that are synchronized with the CPU clock, eliminating  
the delay associated with data transfers between the CPU and memory. SDRAM takes memory  
access away from the CPU control; internal registers in the memory accept the request, and  
lets the CPU do something else while the data requested is assembled for the next time the  
CPU talks to the memory.  
SPD for SDRAM module  
Serial Presence Detect (SPD) is most like an ID detect for SDRAM module, it using a EE-  
PROM component on DIMM module for storing module configuration information inside.  
The Serial Presence Detect function is implemented using a 2048 bit EEPROM component.  
This nonvolatile storage device contains data programmed by the DIMM manufacturer that  
identifies the module type and various SDRAM organization and timing parameters.  
System Disk  
A system disk contains the core file of an operating system that boots up the operating system.  
TCP/IP (Transmission Control Protocol/Internet Protocol). The communications proto-  
col used by the UNIX system and the Internet. TCP checks for lost packets, puts the data from  
multiple packets into the correct order, and requests that missing or damaged packets be  
resent.  
USB (Universal Serial Bus)  
A 4-pin serial cable bus that allows up to 127 plug and play computer peripherals such as  
keyboard, mouse, joystick, scanner, printer, modem, and monitor to share a bandwidth through  
a host scheduled token based protocol. This allows attaching or detaching while the host and  
other peripherals are in operation. Supports synchronous and asynchronous transfer types  
over the same set of wires up to 12Mbit/sec. USB 2.0 provides twice the transfer rate com-  
pared to USB 1.0 and competes with the 1394 standard.  
Wake-On-LAN  
Computer will automatically wake-up upon receiving a wake-up packet through a Network  
interface when it is under power soft-off, suspend or sleep mode.  
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7. APPENDIX  
7.1 Modem Riser  
7.2.1 56K Software Modem  
The Modem Riser (MR) is a high-speed PC  
communication peripheral which works with  
AMC97/MC97 compliant codecs. With this  
software modem, you can connect your com-  
puter to a remote location, receiving data at up  
to 56 Kbps in V.90 or K56flex modes.  
Layout of Primary  
Codec  
Top:  
PHONE  
7.2.2 Primary/Seconday MR  
Bottom:  
LINE  
There are two types of modem risers: primary  
MR and secondary MR. In appearance, the pri-  
mary MR has a crystal onboard but the second-  
ary does not. If your motherboard has an audio  
codec and no PCI audio chipset onboard, you  
may use the secondary MR; otherwise, you  
should use the primary MR.  
Crystal  
7.2.3 Hardware Installation Procedure  
1. Power OFF your computer.  
2. Open the computer chassis and re-  
move the metal plate on the AMR ex-  
pansion slot.  
3. Carefully align the MR cards connec-  
tor to the AMR slot and press firmly.  
4. Secure the MR card onto the chassis  
with the screw removed in step 2.  
5. Connect the MR cards LINE connec-  
tor to a telephone wall jack. Connect  
the PHONE connector to a telephone  
(optional).  
6. Replace the computer chassis.  
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7. APPENDIX  
7.2.4 Software Setup in Windows 98  
The Modem Riser supports the Plug and Play feature. It allows your computer to  
automatically set the optimal configurations for the MR and communication software.  
Follow the procedure below to install the modem driver.  
1. Power ON the computer after the hard-  
ware installation is completed.  
2. Windows 98 will automatically detect the  
modem and display a PCI Cardmes-  
sage under Add New Hardware Found.  
3. Select Search for the best driver for  
your device and click Next.  
4. Insert the Support CD that came with  
your motherboard into your CD-ROM  
drive. Enter the path E:\Modem\Win98  
(assuming that your CD-ROM drive is  
drive E:) for the MR driver.  
5. After the driver is located, click Next  
and then click Finish.  
6. Restart your computer. Double click the  
modem icon at the bottom-right corner  
of the window.  
7. Click the Settings tab. Select your coun-  
try and language. Click OK.  
8. Click Start, point to Settings, click  
Control Panel, double click Modems,  
click the General tab, and click  
Motorala SM56 AC-L Modem.  
9. Click Diagnostic and then click the  
designated COM port as shown.  
10. Click More Info.... If the computer sys-  
tem successfully communicates with the  
modem, responses will be displayed as  
shown.  
96  
ASUS A7N266-E Users Manual  
INDEX  
A
Clear RTC RAM Jumper 20  
Connectors 41  
Chassis Fan 37  
CPU Fan 37  
Accelerated Graphics Port  
AGP Capability 62  
AGP Pro Slot 28  
External 31  
Accessories  
Floppy Disk Drive 35  
Game/MIDI 34  
IDE 36  
IDE Activity LED 35  
Infrared 38  
Modem Riser 95  
ACR-A6CH-Audio Card 29  
ASUS PC Probe 81  
ASUS Update 80  
Panel 42  
ATAPI CD-ROM 71  
Parallel Port 32  
Power Supply Thermal Sensor 42  
PS/2 Keyboard 31  
PS/2 Mouse 31  
Serial Port 33  
SMBus 41  
Thermal Sensor 41  
USB 32  
B
BIOS  
Advanced Menu 58  
Beep Code 43  
Boot Menu 71  
Boot Sequence 71  
Exit Menu 73  
CPU. See Central Processing Unit  
CPU : DRAM Freq. Jumper 18  
CyberLink  
PowerPlayer SE 88  
VideoLive Mail 89  
CyberLink PowerPlayer SE 88  
CyberLink VideoLive Mail 89  
Language 57  
Legend Bar 50  
Main Menu 52  
Menu Bar 50  
Power Menu 68  
Setup Defaults, loading 74  
Setup Program 49  
Smart BIOS 8  
D
Sub-menu launching 51  
Updating 45  
DDR Voltage Jumper 19  
DIMM Memory 21  
BIOS Beep Codes 43  
Boot Device  
Selection 71  
Boot Up NumLock Status 56  
Boot Virus Detection 72  
E
Expansion Cards  
Assigning IRQs 26  
Installing 25  
C
F
Central Processing Unit 24  
Central Processing Unit (CPU)  
Level 1/Level 2 Cache 59  
Speed 58  
Floppy 3 Mode 52  
Floppy Disk Drive Connector 35  
Upgrade/Reinstallation 60  
Chassis Intrusion 40  
Chip Configuration 61  
ASUS A7N266-E Users Manual  
97  
INDEX  
Voltage Regulator 19  
G
K
Glossary 91  
Keyboard  
H
Auto-Repeat Rate 56  
Hard Disk Drives (HDDs)  
CHS Capacity 55  
Cylinders 54  
Connector 31  
Features 56  
Keyboard Lock Switch Lead 42  
Heads 55  
L
LBA Capacity 55  
Primary/Secondary Master 53  
Primary/Secondary Slave 53  
Sectors 54  
LED indicators 17  
Legacy Diskette 52  
Translation Method 54  
Types 53  
M
Hardware Monitor 70  
Hardware Setup  
Memory Installation 22  
Modem Riser 95  
CPU Installation 24  
Memory Installation 22  
Procedure 16  
Motherboard  
Components 12, 13  
IRQ Table 27  
Layout 14  
Headers  
USB 40  
Settings 17  
Specifications 8, 9  
Mouse  
I
Connector 31  
Multi-Sector Transfers 55  
IDE Activity LED 35  
IDE Connectors 36  
IDE Hard Disks. See Hard Disk Drives  
O
(HDDs)  
Installation  
CPU 24  
Onboard LED Indicators 17  
P
Memory 22  
Interrupt Request (IRQ)  
Parallel Port 63  
Modes 64  
Standard Assignments 26  
Parallel Port Connector 32  
Password  
J
Jumperless Setting 18  
Jumpers  
If You Forget 57  
Notes 57  
Clear RTC RAM 20  
CPU : Dram Frequency 18  
DDR Voltage 19  
Supervisor 57  
User 57  
PC Probe 81  
JEN Jumperless 18  
USB Device Wake-up 20  
PCI Configuration 65  
98  
ASUS A7N266-E Users Manual  
INDEX  
PCI Latency Timer 65  
PCI/VGA Palette Snoop 65  
PIO Mode 55  
Ports. See Connectors  
Power On Self Test 72  
PowerPlayer SE  
Using 88  
Procedure  
U
UART2 63  
Ultra DMA Mode 55  
Universal Serial Bus (USB) 32  
Headers 40  
Ports 32  
USB Device Jumper 20  
USB Legacy Support 59  
USB ports 9  
ACR-A6CH Installation 30  
CPU Installation 24  
Hardware Setup 16  
Using  
3Deep Color Tuner 86  
ASUS Update 80  
PC Probe 81  
Procedures  
Modem Riser Installation 95  
PS/2 Keyboard 31  
PowerPlayer SE 88  
PS/2 Keyboard Port 9  
PS/2 Mouse 31  
V
Function Control 59  
Video ROM BIOS Shadow 67  
VideoLive Mail 89  
PS/2 Mouse Port 9  
R
Voltage Regulator Jumper 19  
RTC RAM  
Clearing 20  
S
SDRAM  
Configuration 61  
Serial Ports 63  
Connectors 33  
Serial ports 9  
SMART Monitoring 55  
SMBus Connector 41  
Starting Up 43  
System Chipset 8  
System Date 52  
System Time 52  
T
Thermal Sensor Connector 41  
ASUS A7N266-E Users Manual  
99  
NOTES  
100  
ASUS A7N266-E Users Manual  

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