®
A7N266-E
JumperFree™ DDR DRAM
266MHz FSB
NVIDIA® nForce 420-D™ Chipset
Socket A Motherboard
USER’S 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) User’s Manual
ASUS A7N266-E User’s Manual
7
2. FEATURES
2.1 ASUS A7N266-E Motherboard
TheASUSA7N266-E motherboard is a high-performance motherboard powered by
AMD® Athlon™ XP /Athlon™ /Duron™ processors. It sports the new nVidia® nForce
420-D™ chipset and features GeForce2MX™ GPU performance. The board offers
users advanced features to provide superlative performance. The A7N266-E meets
today’s demand for a superior quality, fully integrated system.
2.1.1 Core Specifications
•
AMD® Athlon™ XP/Athlon™ / Duron™ Processor support: Features the latest
AMDs, 500MHz to 1.6 GHz and higher.
•
North Bridge System Chipset: Features the brand new nVidia® nForce™ IGP-
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-ChannelAC’97 compliant 3D positional
audio and Dolby™ digital 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 system’s 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 User’s Manual
8
2. FEATURES
2.1.2 Connections
•
•
CPU socket: Socket A (462) for Athlon™ XP / Athlon™ / Duron™ processors.
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 AC’97 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 User’s 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 AC’97 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 AC’97 compliant 3D positional audio and Dolby™ digital encoding.
C.O.P. Thermal Protection: WithAMD® Athlon XP™ installed, 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.
•
PC’99 Compliant: Both the BIOS and hardware levels of ASUS smart series
motherboards are PC’99 compliant. The new PC’99 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 PC’99.
ASUS A7N266-E User’s 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 User’s Manual
11
2. FEATURES
2.2 Motherboard Components
Location
See opposite page for locations.
Processor Support Socket A for AMD® Athlon™ XP, Athlon™ and Duron™ CPUs 1
Chipsets nVidia® nForce™ IGP-128 North Bridge .................................. 2
nVidia® nForce™ MCP-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 User’s 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 User’s 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 User’s 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 User’s 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 User’s 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 User’s 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 User’s 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 User’s 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 “normal” to “clear CMOS” for a few seconds
then replace the jumper cap to the “normal” position.
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 User’s 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.
TwinBank™ Technology: 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 User’s 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 User’s 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 User’s 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
AMD™ Athlon
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 User’s 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 User’s 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 IRQ” or 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 User’s 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 User’s 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.
28
ASUS A7N266-E User’s 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 AC’97 audio CODEC chips that supply 6-channel audio output.
The ACR-A6CH produces an S/PDIF_OUT digital audio signal with help from the
nVidia™ MCP-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 User’s Manual
29
3. HARDWARE SETUP
ACR-A6CH Hardware Installation Procedure
1. Power OFF your computer.
2. Carefully align the ACR-A6CH card’s 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 User’s 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 User’s 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
32
ASUS A7N266-E User’s 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 User’s 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 User’s Manual
3. HARDWARE SETUP
9) IDE Activity LED (2-pin IDELED)
This connector supplies power to the cabinet’s 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 User’s 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 cable’s 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 User’s 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 “Rotation” signal 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 User’s 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
38
ASUS A7N266-E User’s Manual
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
ASUS A7N266-E User’s Manual
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
40
ASUS A7N266-E User’s Manual
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
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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 “Green” mode, 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 user’s 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 system’s if it complies with “green” standards
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
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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 computer” will
not appear when shutting down with ATX power supplies.
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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 “Floppy” as the first item in the boot
sequence.
4. In DOS mode, type A:\AFLASH <Enter> to run AFLASH.
IMPORTANT! If the word “unknown” appears 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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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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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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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.
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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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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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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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