AOpen AK77 600N User Manual
AK77-600N  
Online Manual  
AK77-600N  
DOC. NO.: AK77600N-OL-E0307B  
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AK77-600N  
Online Manual  
Supported CPU Frequency ........................................................................................................................................... 29  
AOpen “Watch Dog ABS” .............................................................................................................................................. 30  
CPU and Housing Fan Connector (with H/W Monitoring) .............................................................................................. 31  
DIMM Sockets............................................................................................................................................................... 32  
ATX Power Connector................................................................................................................................................... 34  
AC Power Auto Recovery.............................................................................................................................................. 34  
IDE and Floppy Connector ............................................................................................................................................ 35  
ATA/133 Supported ....................................................................................................................................................... 37  
Front Panel Connector .................................................................................................................................................. 38  
IrDA Connector ............................................................................................................................................................. 39  
AGP (Accelerated Graphic Port) 8X Expansion Slot...................................................................................................... 40  
WOM (Zero Voltage Wake on Modem) Connector......................................................................................................... 41  
WOL (Wake on LAN) Connector.................................................................................................................................... 44  
10/100 Mbps LAN onboard............................................................................................................................................ 46  
CNR (Communication and Network Riser) Expansion Slot............................................................................................ 47  
Support Six USB 2.0 Port.............................................................................................................................................. 48  
Color Coded Back Panel ............................................................................................................................................... 49  
Super 5.1 Channel Audio Effect .................................................................................................................................... 50  
Front Audio Connector .................................................................................................................................................. 51  
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S/PDIF (Sony/Philips Digital Interface) Connector......................................................................................................... 52  
Dr. LED Connector (User Upgrade Optional)................................................................................................................. 53  
Case Open Connector................................................................................................................................................... 55  
CD Audio Connector ..................................................................................................................................................... 56  
AUX-IN Connector......................................................................................................................................................... 57  
Game Port Bracket Supported ...................................................................................................................................... 58  
JP14 Clear CMOS Data Jumper.................................................................................................................................... 59  
JP20 K7 Host Clock Selection....................................................................................................................................... 60  
JP28 KB/Mouse Wake-up Jumper................................................................................................................................. 61  
STBY LED..................................................................................................................................................................... 62  
AGP Protection Technology and AGP LED.................................................................................................................... 63  
Battery-less and Long Life Design................................................................................................................................. 64  
Resetable Fuse ............................................................................................................................................................. 65  
2200μF Low ESR Capacitor......................................................................................................................................... 66  
PHOENIX-AWARD BIOS..............................................................................................................68  
How To Use Phoenix-Award™ BIOS Setup Program .................................................................................................... 69  
How To Enter BIOS Setup............................................................................................................................................. 70  
WinBIOS Utility ............................................................................................................................................................. 71  
BIOS Upgrade under Windows environment ................................................................................................................. 73  
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Vivid BIOS technology................................................................................................................................................... 75  
Driver and Utility .......................................................................................................................76  
Auto-run Menu from Bonus CD ..................................................................................................................................... 76  
Installing VIA 4 in 1 Driver............................................................................................................................................. 77  
Installing Audio Driver ................................................................................................................................................... 78  
Installing USB2.0 Driver ................................................................................................................................................ 79  
Installing LAN Driver ..................................................................................................................................................... 80  
AOConfig Utility............................................................................................................................................................. 83  
The noise is gone!! ---- SilentTek .................................................................................................................................. 85  
EzClock......................................................................................................................................................................... 88  
Glossary ....................................................................................................................................92  
AC97 CODEC ............................................................................................................................................................... 92  
ACPI (Advanced Configuration & Power Interface) ....................................................................................................... 92  
ACR (Advanced Communication Riser)......................................................................................................................... 92  
AGP (Accelerated Graphic Port).................................................................................................................................... 93  
AMR (Audio/Modem Riser)............................................................................................................................................ 93  
ATA (AT Attachment) ..................................................................................................................................................... 93  
BIOS (Basic Input/Output System) ................................................................................................................................ 94  
Bluetooth....................................................................................................................................................................... 94  
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CNR (Communication and Networking Riser)................................................................................................................ 95  
DDR (Double Data Rate) RAM ...................................................................................................................................... 95  
ECC (Error Checking and Correction) ........................................................................................................................... 96  
EEPROM (Electronic Erasable Programmable ROM).................................................................................................... 96  
EPROM (Erasable Programmable ROM)....................................................................................................................... 96  
EV6 Bus ........................................................................................................................................................................ 96  
FCC DoC (Declaration of Conformity) ........................................................................................................................... 97  
FC-PGA (Flip Chip-Pin Grid Array)................................................................................................................................ 97  
FC-PGA2 (Flip Chip-Pin Grid Array).............................................................................................................................. 97  
Flash ROM.................................................................................................................................................................... 97  
Hyper Threading ........................................................................................................................................................... 97  
IEEE 1394..................................................................................................................................................................... 98  
Parity Bit ....................................................................................................................................................................... 98  
PCI (Peripheral Component Interface) Bus ................................................................................................................... 99  
PDF Format................................................................................................................................................................... 99  
PnP (Plug and Play)...................................................................................................................................................... 99  
POST (Power-On Self Test) .......................................................................................................................................... 99  
PSB (Processor System Bus) Clock............................................................................................................................ 100  
RDRAM (Rambus Dynamic Random Access Memory)................................................................................................ 100  
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RIMM (Rambus Inline Memory Module) ...................................................................................................................... 100  
SDRAM (Synchronous DRAM) .................................................................................................................................... 100  
SATA (Serial ATA) ....................................................................................................................................................... 101  
SMBus (System Management Bus)............................................................................................................................. 101  
SPD (Serial Presence Detect)..................................................................................................................................... 101  
USB 2.0 (Universal Serial Bus) ................................................................................................................................... 101  
VCM (Virtual Channel Memory)................................................................................................................................... 102  
Wireless LAN – 802.11b.............................................................................................................................................. 102  
ZIP file......................................................................................................................................................................... 102  
Troubleshooting.......................................................................................................................103  
Technical Support ...................................................................................................................107  
Product Registration ...............................................................................................................110  
How to Contact Us ..................................................................................................................111  
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You Must Notice  
Adobe, the Adobe logo, Acrobat is trademarks of Adobe Systems Incorporated.  
AMD, the AMD logo, Athlon and Duron are trademarks of Advanced Micro Devices, Inc.  
Intel, the Intel logo, Intel Celeron, Pentium II, Pentium III, Pentium 4 are trademarks of Intel Corporation.  
Microsoft, Windows, and Windows logo are either registered trademarks or trademarks of Microsoft Corporation in the United  
States and/or other countries.  
All product and brand names used on this manual are used for identification purposes only and may be the registered  
trademarks of their respective owners.  
All of the specifications and information contained in this manual are subject to change without notice. AOpen reserves the right  
to revise this publication and to make reasonable changes. AOpen assumes no responsibility for any errors or inaccuracies that  
may appear in this manual, including the products and software described in it.  
This documentation is protected by copyright law. All rights are reserved.  
No part of this document may be used or reproduced in any form or by any means, or stored in a database or retrieval  
system without prior written permission from AOpen Corporation.  
Copyright© 1996-2003, AOpen Inc. All Rights Reserved.  
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AK77-600N  
Online Manual  
Before You Start  
This Online Manual will introduce to the user how this product is installed. All useful information will be described in later  
chapters. Please keep this manual carefully for future upgrades or system configuration changes. This Online Manual is saved  
in PDF format, we recommend using Adobe Acrobat Reader 5.0 for online viewing, it is included in Bonus CD disc or you can  
get free download from Adobe web site.  
Although this Online Manual is optimized for screen viewing, it is still capable for hardcopy printing, you can print it by A4 paper  
size and set 2 pages per A4 sheet on your printer. To do so, choose File > Page Setup and follow the instruction of your printer  
driver.  
Thanks for the help of saving our earth.  
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Overview  
Thank you for choosing AOpen AK77-600N. The AK77-600N is AMD® Socket 462 motherboard (M/B) based on the ATX form  
factor featuring the VIA Apollo KT600 chipset. As high performance chipset built in the M/B, the AK77-600N comes with AMD®  
Socket 462 series Athlon™ & Duron™ and AthlonXP™ processor (with CPU Overheat Protection circuit to Athlon™XP CPU only)  
and 200/266/333/400 MHz EV6 system bus. In the AGP performance, it has one AGP slot and supports AGP 8X/4X/2X mode  
and pipelined spilt-transaction long burst transfer up to 2.1GB/sec. With high bandwidth 266/533MB/s 8-bit V-Link Host  
Controller, DDR400(PC3200), DDR333(PC2700) and DDR266(PC2100) DDR RAM can be applied to the AK77-600N and  
DDR400 maximum memory size can be up to 2GB  
and DDR333/266 up to 3GB. The on-board IDE  
controller supports Ultra DMA 66/100/133 mode and  
the transfer rate up to 133MB/s. Beside, AK77-600N  
has an AC97 CODEC RealTek ALC650 chipset  
onboard for provides high performance and magic  
surround stereo sound to let people enjoy working  
with it. More than that, this motherboard supports USB  
2.0 function with a fancy speed of up to 480Mbps.  
Now, enjoy all features from AOpen AK77-600N.  
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Feature Highlight  
CPU  
Supports AMD® Socket 462 series CPU with both 200/266/333/400 MHz EV6 Bus designed for Socket 462 technology.  
Athlon: 600MHz~1.4GHz  
Duron: 600MHz~1.2GHz  
AthlonXP: 1500+(1.33GHz)~3200+(2.2GHz)  
Chipset  
The VIA Apollo KT600 consists of the KT600 V-Link DDR Host system controller and the VT8235-CD highly integrated V-Link  
Client PCI/LPC controller. The Host system controller provides superior performance between the CPU, SDRAM, AGP bus, and  
V-Link interface with pipelined, burst, and concurrent operation. The VT8235-CD V-Link Client controller is a highly integrated  
PCI/LPC controller. Its internal bus structure is based on 66MHz PCI bus that provides 8x bandwidth compare to previous  
generation PCI/ISA bridge chips. The VT8235-CD integrated Client V-Link controller with 266/533MB/s bandwidth between  
Host/Client V-Link interface, providing a V-Link-PCI and V-Link-LPC controller.  
Ultra DMA 66/100/133 Bus Master IDE  
Comes with an on-board PCI Bus Master IDE controller with two connectors that supports four IDE devices in two channels,  
supports Ultra DMA 66/100/133, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 4, and supports Enhanced IDE devices.  
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LAN Port  
On the strength of RealTek RTL8100BL controller on board, which is an highly-integrated Platform LAN Connect device, it  
provides 10/100 Mbps Ethernet for office and home use.  
Expansion Slots  
Including six 32-bit/33MHz PCI, one CNR and one AGP 8X slots. The PCI local bus throughput can be up to 132MB/s. The  
Communication & Networking Riser (CNR) slot provided from AK77-600N can support CNR interface for a Modem/Audio card.  
The Accelerated Graphics Port (AGP) specification provides a new level of video display sophistication and speed. The AGP  
video cards support data transfer rate up to 2.1GB/s. As AK77-600N includes one AGP expansion slot for a bus mastering AGP  
graphic card, For AD and SBA signaling, AK77-600N can support 133MHz 2X/4X/8X mode. AK77-600N supports six master PCI  
slots for arbitration and decoding functions.  
Memory  
With VIA Apollo KT600 chipset, the AK77-600N can support Double-Data-Rate (DDR) RAM. The DDR RAM interface allows zero  
wait state bursting between the RAM and the data buffers at 400/333/266/200 MHz. The six banks of DDR RAM can be  
composed of an arbitrary mixture of 64, 128, 256, 512,1024MB x N DDR RAM and support DDR400 maximum up to 2GB and  
DDR333/266 up to 3GB. The AK77-600N allows DDR RAM to run at either synchronous or pseudo-synchronous mode with the  
host CPU bus frequency (400/333/266/200MHz).  
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On-board AC97 Sound  
AK77-600N uses the AC97 CODEC RealTek ALC650 chip, which supports high quality of 5.1 Channel audio effects. This  
on-board audio includes a complete audio recording and playback system.  
Six USB 2.0 Connectors  
Provides six USB ports for USB interface devices, such as mouse, keyboard, modem, scanner, etc. Please note that USB 2.0,  
with fancy speed up to 480Mbps, is 40 times faster than the traditional ones. Except for the speed increase, USB 2.0 supports  
old USB 1.0/1.1 software and peripherals, offering impressive and even better compatibility to customers.  
1MHz Stepping CPU Frequency Adjustment  
Provides “1MHz Stepping CPU Frequency Adjustment” function in the BIOS. This magic function allows you adjust CPU FSB  
frequency from 100~250MHz by 1MHz stepping, and lets your system can get maximum performance.  
Watch Dog ABS  
Includes AOpen “Watch Dog ABS” function that can auto-reset system in 4.8 seconds when you fail the system overclocking.  
Dr. LED (User Upgrade Optional)  
Dr. LED has 8 LEDs on AK77-600N, which can easily show what kind of problem you may encounter.  
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Power Management/Plug and Play  
AK77-600N supports the power management function that confirms to the power-saving standards of the U.S. Environmental  
Protection Agency (EPA) Energy Star program. It also offers Plug-and-Play, which helps saving users from configuration  
problems, thus making the system much more user-friendly.  
Hardware Monitoring Management  
Supports CPU or system fans status, temperature and voltage monitoring and alert, through the on-board hardware monitor  
module and AOpen Hardware Monitoring Utility.  
Enhanced ACPI  
Fully implement the ACPI standard for Windows® 95/98/ME/NT/2000/XP series compatibility, and supports Soft-Off, STR  
(Suspend to RAM, S3), STD (Suspend to Disk, S4), WOM (Wake On Modem), WOL (Wake On LAN) features.  
Super Multi-I/O  
AK77-600N 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 the wireless connections.  
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Quick Installation Procedure  
This page gives you a quick procedure on how to install your system. Follow each step accordingly.  
1. Installing CPU and Fan  
2. Installing System Memory (DIMM)  
3. Connecting Front Panel Cable  
4. Connecting IDE and Floppy Cable  
5. Connecting ATX Power Cable  
6. Connecting Back Panel Cable  
7. Power-on and Load BIOS Setup Default  
8. Setting CPU Frequency  
9. Reboot  
10. Installing Operating System (such as Windows XP)  
11. Installing Driver and Utility  
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Front Audio Connector  
Motherboard Map  
AC97 CODEC  
AUX-IN Connector  
S/PDIF Connector  
Colored Back Panel  
CD-IN Connector  
Case Open Connector  
JP28 Keyboard/Mouse  
Wakeup Jumper  
Phoenix Award 2Mbit Flash  
ROM BIOS  
Game Port Connector  
RealTek RTL8100BL  
ATX Power Connector  
CNR Expansion Slot  
2200μF Low ESR Capacitors  
SYSFAN3 Connector  
32-bit PCI Expansion Slot x6  
IrDA Connector  
AGP 8x Slot  
462-pin CPU Socket with  
Voltage and Frequency  
WOM Connector  
Auto-Detection that supports  
AMDTM AthlonTM / DuronTM  
/
and AthlonTMXP (with CPU  
Overheat Protection circuit to  
AthlonTMXP CPU only)  
USB 2.0 Connector  
CPUFAN1 Connector  
JP14 Clear CMOS Jumper  
VIA® Apollo KT600 Chipset  
and VT8235-CD SB  
184-pin DIMMx3 supports  
DDR400 max. up to 2GB and  
DDR333/DDR266 max up to  
3GB  
Dr. LED Connector  
(User Upgrade Optional)  
WOL Connector  
JP20 K7 Host Clock Jumper  
Front Panel Connector  
SYSFAN2 Connector  
IDE Connector x 2  
(ATA/66/100/133 supported)  
FDD Connector  
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Block Diagram  
DDR400 RAM Up to 2GB and  
DDR333/266 Up to 3GB  
PCI Bus  
32-bit PCI Slot x6  
DDR SDRAM Socket x3  
IDE Drive x4  
Primary  
Channel  
ATA  
66/100/133  
100/133/166/200  
MHz System  
Bus  
Secondary  
Channel  
Socket 462  
AMD  
Athlon/Duron/AthlonXP  
CPU  
VIA KT600  
AGP Bus  
AC’97 Link  
Audio CODEC  
VT8235-CD  
RealTek  
RTL8100  
BL  
LAN connect Component  
AGP 8X Slot  
CNR Slot  
1st USB Port  
2MBit Flash EEPROM  
Parallel Port  
2nd USB Port  
3rd USB Port  
Serial Port x2  
USB connector x6  
Floppy Disk Drive x2  
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Hardware Installation  
This chapter describes jumpers, connectors and hardware devices of this motherboard.  
Note: Electrostatic discharge (ESD) can damage your processor, disk drives, expansion boards,  
and other components. Always observe the following precautions before you install a system  
component.  
1. Do not remove a component from its protective packaging until you are ready to install it.  
2. Wear a wrist ground strap and attach it to a metal part of the system unit before handling a  
component. If a wrist strap is not available, maintain contact with the system unit throughout  
any procedures requiring ESD protection.  
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About “Manufacturer Upgrade Optional” and “User Upgrade  
Optional”…  
When you read this online manual and start to assemble your computer system, you may find some of functions are called  
“Manufacturer Upgrade Optional”, and some are called “User Upgrade Optional”. Though all AOpen motherboards include many  
amazing and powerful features, in some situations, these powerful features are not used to every user. Hence, we changed  
some key features as “Manufacturer Upgrade Optional” for you to choose. Some optional functions that can be upgraded by  
users, we call them “User Upgrade Optional”. As for those optional functions that can’t be upgraded by ourselves, we call them  
“Manufacturer Upgrade Optional”. If needed, you can contact our local distributors or resellers for purchasing “User Upgrade  
Optional” components, and again you can visit AOpen official web site: http://english.aopen.com.tw/ for more detail information.  
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CPU Installation  
This motherboard supports AMD® Athlon XP, Athlon and Duron Socket 462 series CPU. Be careful of CPU orientation when  
you plug it into CPU socket (with CPU Overheat Protection function implemented, the system will be automatically power off  
when the temperature of CPU reached 97 degree, but works on AthlonXP CPU only).  
2. Locate Pin 1 in the socket and look for a black dot or cut edge on the  
CPU upper interface. Match Pin 1 and cut edge, then insert the CPU into  
the socket.  
1. Pull up the CPU socket lever and  
up to 90-degree angle.  
CPU socket  
Lever  
CPU pin 1  
and cut edge  
Black dot  
and cut edge  
Note: This picture is for example only; it may not exactly be the same motherboard.  
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3. Press down the CPU socket lever and finish  
CPU installation.  
CPU cut edge  
Note: If you do not match the CPU  
socket Pin 1 and CPU cut edge well, it  
may damage the CPU.  
Note: This picture is for example only; it may not exactly be the same motherboard.  
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EzColor  
Breaking through traditional outlook of motherboard, AOpen now brings you a new fresh look of motherboard! – EzColor!  
Fancy? You may think so, but actually it is a practical and useful feature for amateur or even power-users. Coming in specific  
color for specific connector and module, components on motherboard are now born with their respective colors. Users may now  
easily recognize what jumper or cable should match with specific jumper or cable by COLOR, without having the trouble of  
holding user guide in one hand and connecting jumpers with the other hand.  
And what makes this feature so great is that, even the easy-to-get-confused front panel connector is differentiated now with  
different light colors!  
Sky Blue: AGP Slot  
Brown: CNR Slot  
Sand: PCI Master  
Flame Red: ATX Power Connector  
Electric Blue: Memory Modu  
AK77-600N  
Online Manual  
1
Power Switch  
ACPI & Power LED  
IDE LED  
SPEAKER  
RESET  
Black: IDE 2 Connector  
Navy Blue: IDE 1 Connector  
Note: Colors setting varies on different motherboards, the color setting here applies only to AK77-600N  
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AOpen Overheat Protection (O.H.P.) Technology  
With AMD platform substantially keeps increasing the speed of its CPU, it inevitably led to the  
annoying problem of high CPU operation temperature at the same time. In order to prevent  
accidental failure of CPU fan, which could cause the burning down of the AthlonXP CPU, we, AOpen, have meticulously  
developed a new technology, named, O.H.P. (Overheat Protection) Technology to protect them. Thanks to the intelligent  
monitoring design of AOpen O.H.P. technology, user can now finally set their mind at ease even when fan failed to work without  
fearing the possible damage of CPU.  
Under the circumstances that CPU fan is running properly,  
AthlonXP temperature should be way below the highest  
temperature limit of 97℃. However, if CPU fan accidentally  
becomes malfunction or improperly installed, the CPU  
temperature would rocket abruptly, and you may find your  
system hang up or crying over the smoking CPU if you haven’t  
installed AOpen O.H.P. previously. With AOpen O.H.P.  
technology applied, the specific thermal detection pins on  
AthlonXP CPU would sense voltage difference when processor  
is overheated with fan failed, and the overheat protection  
system would immediately send out a signal to abort your  
system by cutting CPU electricity before any damage is done.  
Unlike other manufacturers who use BIOS or software to  
control the power supply of CPU, AOpen O.H.P. Technology is  
purely hardware-controlled the minute after system boot-up,  
and occupies no system resource. We are pleasant to phase in  
this practical function on all AOpen AMD series motherboards to protect customer’s valuable hardware and personal data.  
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CPU Over-current Protection  
Over Current Protection has been popularly implemented on ATX 3.3V/5V/12V switching power supply for a while. However,  
new generation CPU is able to use regulator of different voltages to transfer 12V to CPU voltage (for example, to 2.0V). This  
motherboard is with switching regulator onboard that supports CPU over-current protection, and it applies to 3.3V/5V/12V power  
supply for providing full line over-current protection.  
12V (Protected by power supply)  
3.3V (Protected by power supply)  
ATX Switching Power Supply  
5V (Protected by power supply)  
Onboard Power Regulator  
CPU Core Voltage  
(Over-Current Protection)  
Note: Although we have implemented protection circuit try to prevent any human operating  
mistake, there is still certain risk that CPU, memory, HDD, add-on cards installed on this  
motherboard may be damaged because of component failure, human operating error or unknown  
nature reason. AOpen cannot guaranty the protection circuit will always work perfectly.  
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Enlarged Aluminum Heatsink  
Cool down CPU and Chipset is important for system reliability. Enlarged aluminum heat sink provides better heat consumption  
especially when you are trying to over clocking the CPU.  
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Full-range Adjustable CPU Core Voltage  
This function is dedicated to overclockers. The CPU core voltage of this motherboard is adjustable 1.10V to 1.85V by 0.05V  
stepping. But this motherboard can also automatically detect CPU VID signal and generates proper CPU core voltage.  
BIOS Setup > Frequency/Voltage Control > CPU Voltage Setting  
Warning: Higher CPU core voltage may be  
able to increase CPU speed for overclocking,  
but you may damage the CPU or reduce the  
CPU lifecycle.  
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Setting CPU Frequency  
This motherboard is CPU jumper-less design, you can set CPU frequency through the BIOS setup, and no jumpers or switches  
are needed.  
BIOS Setup > Frequency/Voltage Control > CPU Speed Setting  
CPU Ratio  
From 5x to 18x step 0.5x  
FSB=100, 100~129 by 1MHz stepping adjustment technology  
FSB=133, 130~160 by 1MHz stepping adjustment technology  
FSB=166, 161~191 by 1MHz stepping adjustment technology  
FSB=200, 200-250 by 1MHz stepping adjustment technology  
CPU FSB  
(By manual Adjustment)  
Warning: VIA® Apollo KT600 chipset supports  
200MHz FSB (with performance reaches maximum  
400MHz EV6 system bus) and 66MHz AGP clock,  
higher clock setting may cause serious system  
damage.  
Warning: Supposed you have had adjusted CPU  
ratio on your current CPU, and you plan to replace a  
new CPU. Please use <Home> key or Clear CMOS  
to restore the default setting when changing a new  
CPU, because the system will still implement the  
previous CPU setting on the new one.  
Tip: If your system hangs or fails to boot because of  
overclocking, simply use <Home> key to restore the  
default setting or you can wait the AOpen “Watch Dog  
ABS” reset the system after five seconds and system  
will auto-detect hardware again.  
Home  
AK77-600N  
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Supported CPU Frequency  
Core Frequency = CPU Bus Clock * CPU Ratio  
AGP Clock = PCI Clock x 2  
PCI Clock = CPU Bus Clock / Clock Ratio  
EV6 Bus Speed = CPU external bus clock x 2  
CPU  
Core  
EV6  
Bus  
CPU  
Ratio  
Frequency  
1.33GHz  
1.4GHz  
Clock  
Athlon 1.33G  
Athlon 1.4G  
266MHz  
266MHz  
266MHz  
266MHz  
266MHz  
266MHz  
266MHz  
266MHz  
266MHz  
266MHz  
266MHz  
333MHz  
266MHz  
333MHz  
333MHz  
333MHz  
333MHz  
400MHz  
10.0x  
10.5x  
10.0x  
10.5x  
11.0x  
11.5x  
12.0x  
12.5x  
13x  
13.5x  
15x  
11x  
16x  
AthlonXP 1500+  
AthlonXP 1600+  
AthlonXP 1700+  
AthlonXP 1800+  
AthlonXP 1900+  
AthlonXP 2000+  
AthlonXP 2100+  
AthlonXP 2200+  
AthlonXP 2400+  
AthlonXP 2500+ (Barton)  
AthlonXP 2600+  
AthlonXP 2600+  
AthlonXP 2700+  
AthlonXP 2800+ (Barton)  
AthlonXP 3000+ (Barton)  
AthlonXP 3200+ (Barton)  
1.3GHz  
1.4GHz  
Note: This motherboard support  
CPU auto-detection function.  
Hence, you don’t need to setup  
the CPU frequency manually.  
1.46GHz  
1.53GHz  
1.6GHz  
1.667GHz  
1.73GHz  
1.80GHz  
2.0GHz  
1.833GHz  
2.13GHz  
2.08GHz  
2.16GHz  
2.083GHz  
2.167GHz  
2.2GHz  
12.5x  
13x  
12.5x  
13x  
11x  
Note: With CPU speed changing rapidly, there might be fastest CPU on the market  
by the time you received this installation guide. This table is kindly for your  
references only.  
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AOpen “Watch Dog ABS”  
With this motherboard, AOpen provides a very special, useful feature for overclockers.  
When you power-on the system, the BIOS will check last system POST status. If it  
succeeded, the BIOS will enable “Watch Dog ABS” function immediately, and set the  
CPU FSB frequency by user’s setting that stored in the BIOS. If system failed in BIOS POST, the “Watch Dog ABS” will reset the  
system to reboot in five seconds. Then, BIOS will detect the CPU’s default frequency and POST again. With this special feature,  
you can easily overclock your system to get higher system performance without removing the cover of system housing, and be  
able to set the jumper to clear CMOS data when your system hanged.  
Enable/Disable Signal  
from BIOS  
BIOS  
Reset Signal  
AOpen  
CPU ID Signal  
Clock Generator  
Watch Dog ABS  
Countdown about  
5 seconds if fails  
in POST  
CPU  
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CPU and Housing Fan Connector (with H/W Monitoring)  
Plug in the CPU fan cable to the 3-pin CPUFAN1 connector. If you have chassis fan, you can also plug it on SYSFAN2 (FAN2)  
or SYSFAN3 (FAN3) connector.  
GND  
+12V  
SYSFAN3 Connector  
GND  
+12V  
SENSOR  
CPUFAN1 Connector  
GND  
+12V  
SENSOR  
Note: Some CPU fans do not have  
sensor pin, so that cannot support fan  
monitoring.  
SYSFAN2 Connector  
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DIMM Sockets  
This motherboard has three 184-pin DDR DIMM sockets that allow you to install DDR266/333 memory up to 3 GB and DDR400  
memory up to 2GB. Non-ECC DDR RAM is supported. Otherwise, it will cause serious damage on memory sockets or RAM  
module. Newly implemented function, the Voltage of memory on this motherboard is adjustable from 2.5V to 2.8V for over  
clocking purpose.  
Note: According to the standard DDR400 specification from  
JEDEC (Joint Electron Device Engineering Council), it is  
regulated that DDR400 supports only 2x DIMM on the memory  
module for a maximum 2GB capacity, and DDR333 supports  
up to 3x DIMM for a maximum of 3GB capacity. Please be  
noted that KT600 series motherboards follow this standard  
specification on memory as well.  
DDR  
RAM  
Warning: This motherboard supports DDR  
RAM. Please do not install the SDRAM on  
the DDR RAM sockets; otherwise it will  
cause serious damage on memory sockets  
or SDRAM module.  
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How to Install Memory Modules  
Please follow the procedure as shown below to finish memory installation.  
1. Make sure the DIMM module’s pin face down and match the socket’s size as depicted below.  
Pin 1  
52 pins  
40 pins  
2. Insert the module straight down to the DIMM slot with both hands and press down firmly until the DIMM module is securely  
in place.  
Note: The tabs of the DIMM slot  
will close-up to hold the DIMM in  
place when the DIMM touches  
Tab  
the slot’s bottom.  
Key  
Pin 1  
3. Repeat step 2 to finish additional DIMM modules installation.  
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ATX Power Connector  
The ATX power supply uses 20-pin connector shown below. Make sure you plug in the right direction.  
AC Power Auto Recovery  
A traditional ATX system should remain at power off stage when AC power resumes from power failure. This design is  
inconvenient for a network server or workstation, without an UPS, that needs to keep power-on. This motherboard implements  
an AC Power Auto Recovery function to solve this problem.  
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IDE and Floppy Connector  
Connect 34-pin floppy cable and 40-pin IDE cable to floppy connector FDC connector. Be careful of the pin1 orientation. Wrong  
orientation may cause system damage.  
Pin 1  
FDD Connector  
Secondary  
Slave (4th)  
Secondary  
Master (3rd)  
IDE2 (Secondary)  
IDE1 (Primary)  
Pin 1  
Primary  
Primary  
Master (1st)  
Slave (2nd)  
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IDE1 is also known as the primary channel, IDE2 is known as the secondary channel. Each channel supports two IDE devices  
that make a total of four devices. In order to work together, the two devices on each channel must be set differently to Master  
and Slave mode. Either one can be the hard disk or the CDROM. The setting as master or slave mode depends on the jumper  
on your IDE device, so please refer to your hard disk and CDROM manual accordingly.  
Warning: The specification of the IDE cable is a maximum  
of 46cm (18 inches); make sure your cable does not exceed  
this length.  
Tip:  
1. For better signal quality, it is recommended to set the far end  
side device to master mode and follow the suggested sequence  
to install your new device. Please refer to above diagram  
2. To achieve the best performance of Ultra DMA 66/100/133 hard  
disks, a special 80-wires IDE cable for Ultra DMA 66/100/133  
is required.  
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ATA/133 Supported  
This motherboard supports ATA66, ATA100 or ATA133 IDE devices. Following table lists the transfer rate of IDE PIO and DMA  
modes. The IDE bus is 16-bit, which means every transfer is two bytes. As the hard drive industry introduces faster and higher  
capacity hard drives, the current Ultra ATA/100 interface causes a data bottleneck between the drive and the host computer.  
To avoid this problem, hard disk manufacturers have introduced the new Ultra ATA-133 interface technology. Compared to  
traditional ATA/100, ATA/133 has up to 33 percent increase in interface speed with transfer rate of 133MB/s. ATA/133  
performance is ideal for new operating systems, such as Window XP, that demand more storage space and faster data transfer  
rates from more responsive computing experiences.  
To make good use of this new technology and enjoy its best performance, we recommend you to pair your system with a hard  
disk equipped with ATA/133 technology so that your system's need for speeding on this motherboard can be satisfied.  
Mode  
Clock Period Clock Count Cycle Time Data Transfer Rate  
PIO mode 0  
PIO mode 1  
PIO mode 2  
PIO mode 3  
PIO mode 4  
DMA mode 0  
DMA mode 1  
DMA mode 2  
ATA33  
30ns  
30ns  
30ns  
30ns  
30ns  
30ns  
30ns  
30ns  
30ns  
30ns  
20ns  
15ns  
20  
13  
8
600ns  
383ns  
240ns  
180ns  
120ns  
480ns  
150ns  
120ns  
120ns  
60ns  
(1/600ns) x 2byte = 3.3MB/s  
(1/383ns) x 2byte = 5.2MB/s  
(1/240ns) x 2byte = 8.3MB/s  
(1/180ns) x 2byte = 11.1MB/s  
(1/120ns) x 2byte = 16.6MB/s  
(1/480ns) x 2byte = 4.16MB/s  
(1/150ns) x 2byte = 13.3MB/s  
(1/120ns) x 2byte = 16.6MB/s  
(1/120ns) x 2byte x 2 = 33MB/s  
(1/60ns) x 2byte x 2 = 66MB/s  
(1/40ns) x 2byte x 2 = 100MB/s  
(1/30ns) x 2byte x 2 = 133MB/s  
6
4
16  
5
4
4
ATA66  
2
ATA100  
2
40ns  
ATA133  
2
30ns  
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Front Panel Connector  
Attach the power LED, speaker, power and reset switch connectors to the  
corresponding pins. If you enable “Suspend Mode” item in BIOS Setup, the ACPI  
& Power LED will keep flashing while the system is in suspend mode.  
Locate the power switch cable from your ATX housing. It is 2-pin female  
connector from the housing front panel. Plug this connector to the soft-power  
switch connector marked SPWR.  
Suspend Type  
Power on Suspend (S1)  
ACPI LED  
Blinking between green and red  
Blinking between green and red  
Suspend to RAM (S3) or Suspend to Disk (S4)  
1
1
NC  
SPWR  
GND  
Power Switch  
NC  
+5V  
ACPILED-  
GND  
IDE LED  
IDE LED  
+5V  
ACPI & Power LED  
IDE LED  
ACPILED+  
NC  
+5V  
NC  
GND  
GND  
SPEAKER  
NC  
RESET  
GND  
RESET  
SPEAKER  
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IrDA Connector  
The IrDA connector can be configured to support wireless infrared module, with this module and application software such as  
Laplink or Windows 95 Direct Cable Connection, the user can transfer files to or from laptops, notebooks, PDA devices and  
printers. This connector supports HPSIR (115.2Kbps, 2 meters) and ASK-IR (56Kbps).  
Install the infrared module onto the IrDA connector and enable the infrared function from BIOS Setup, UART2 Mode, make sure  
to have the correct orientation when you plug in the IrDA connector.  
Pin 1  
IrDA Connector  
1
NC  
+5V  
KEY  
GND  
IR_RX  
IR_TX  
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AGP (Accelerated Graphic Port) 8X Expansion Slot  
The AK77-600N provides an AGP 8x slot. The AGP 8x is a bus interface targeted for high-performance 3D graphic. AGP  
supports only memory read/write operation and single-master single-slave one-to-one only. AGP uses both rising and falling  
edge of the 66MHz clock, for 4X AGP, the data transfer rate is 66MHz x 4bytes x 4 = 1056MB/s. AGP is now moving to AGP 8x  
mode, which is 66MHz x 4bytes x 8 =2.1GB/s, This AGP expansion slot is for 1.5V-1.6V AGP card only.  
Note: Please note that this motherboard only  
supports 1.5V 2X AGP Card.  
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WOM (Zero Voltage Wake on Modem) Connector  
This motherboard implements special circuit to support Wake On Modem, both internal modem card and external box modem  
are supported. Since internal modem card consumes no power when system power is off, it is recommended to use an internal  
modem. To use internal modem, connect 4-pin cable from RING connector of modem card to the WOM connector on the  
motherboard.  
WOM Connector  
+5VSB  
NC  
RI-  
GND  
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WOM by External Box Modem  
Traditional Green PC suspend mode does not really turn off the system power supply, it uses external box modem to trigger MB  
COM port and resume back to active.  
Serial Port  
(Modem Side)  
Serial Port  
(Motherboard Side)  
Note: This picture is for example only; it may not exactly be the same motherboard.  
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WOM by Internal Modem Card  
With the help of the ATX soft power On/Off, it is possible to have a system totally power off, and wakeup to automatically answer  
a phone call as an answering machine or to send/receive a fax. You may identify whether or not your system is in true power off  
mode by checking to see if the fan of your power supply is off. Both an external box modem and an internal modem card can be  
used to support Modem Wake Up, but if you use an external modem, you have to leave your box modem on.  
WOM Connector  
(Modem Card  
Side)  
WOM Connector  
(Motherboard Side)  
Note: This picture is for example only; it may not exactly be the same motherboard.  
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WOL (Wake on LAN) Connector  
This feature is very similar as Wake On Modem, but it goes through local area network. To use Wake On LAN function, you must  
have a network card with chipset that supports this feature, and connect a cable from LAN card to motherboard WOL connector.  
The system identification information (probably IP address) is stored on network card and because there is a lot of traffic on the  
Ethernet, you need to install network management software, such as ADM, for the checking of how to wake up the system. Note  
that, at least 600mA ATX standby current is required to support the LAN card for this function.  
+5VSB  
GND  
LID  
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WOL Connector  
(Ethernet Card Side)  
WOL Connector  
(Motherboard Side)  
Note: This picture is for example only; it may not exactly be the same motherboard.  
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10/100 Mbps LAN onboard  
The South Bridge VT8235-CD includes a fast Ethernet controller on chip. On the strength of RealTek RTL8100BL LAN controller  
on board, which is a highly-integrated Platform LAN Connect device, it provides 10/100M bps Ethernet for office and home use,  
the Ethernet RJ45 connector is located on top of USB connectors. The orange LED indicates the link mode, it lights when linking  
to network and blinking when transferring data. The green LED indicates the transfer mode, and it lights when data is  
transferring in 100Mbps mode. To enable or disable this function, you may simply adjust it through BIOS.  
Green/Transfer  
Orange/Link  
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CNR (Communication and Network Riser) Expansion Slot  
CNR is a riser card specification to replace the AMR (Audio/Modem Riser) that supports V.90 analog modem, multi-channel  
audio, and phone-line based networking. Owing to CPU computing power getting stronger, the digital processing job can be  
implemented in main chipset and share CPU power. The analogy conversion (CODEC) circuit requires a different and separate  
circuit design, which is put on CNR card. This motherboard implements sound CODEC on board, but reserves CNR slot for the  
option of modem function. Note that you can still use PCI modem card. Please note that if you want to use CNR audio card on  
CNR slot, you must disable the sound output of CODEC from BIOS to prevent the CODEC from making out noises at the same  
time.  
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Support Six USB 2.0 Port  
This motherboard provides six USB ports to connect USB devices, such as mouse, keyboard, modem, printer, etc. There are  
four connectors on the PC99 back panel. You can use proper cables to connect the other USB connectors to the USB modules  
or front panel of chassis. Please note that USB 2.0, with fancy speed up to 480Mbps, is 40 times faster than the traditional ones.  
Except for the speed increase, USB 2.0 supports old USB 1.0/1.1 software and peripherals, offering impressive and even better  
compatibility to customers.  
Pin 1  
USB2 Connector  
1
+5V  
SBD2-  
SBD2+  
GND  
+5V  
SBD3-  
SBD3+  
GND  
NC  
KEY  
Note: Please note that if you would like to use  
USB devices (Example: keyboard, mouse etc.)  
under DOS environment, you must install driver  
that comes with the devices to make it work.  
USB2 Connector  
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Color Coded Back Panel  
The onboard I/O devices are PS/2 Keyboard, PS/2 Mouse, serial ports COM1 and COM2, RJ45 LAN Jack, Printer, USB, AC97  
sound. The view angle of drawing shown here is the back panel of the housing.  
SPP/EPP/ECP  
Parallel Port  
RJ45 LAN Jack  
PS/2 Mouse  
Connector  
Line-In  
Speaker Out  
MIC-In  
USB Port  
(2.0)  
COM 1 Port  
COM 2 Port  
PS/2 Keyboard  
Connector  
USB Port  
(2.0)  
PS/2 Keyboard:  
PS/2 Mouse:  
USB Port:  
For standard keyboard, which is using a PS/2 plug.  
For PC-Mouse, which is using a PS/2 plug.  
Available for connecting USB devices.  
Parallel Port:  
COM1&2 Port:  
To connect with SPP/ECP/EPP printer.  
To connect with pointing devices, modem or others serial devices.  
RJ-45 LAN connector To connect Ethernet for home or office use.  
Speaker Out:  
Line-In:  
MIC-In:  
To External Speaker, Earphone or Amplifier.  
Comes from the signal sources, such as CD/Tape player.  
From Microphone.  
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Super 5.1 Channel Audio Effect  
This motherboard comes with an ALC650 CODEC, which supports high quality of 5.1 Channel audio effects, bringing you a  
brand new audio experience. On the strength of the innovative design of ALC650, you're able to use standard line-jacks for  
surround audio output without connecting any external module. To apply this function, you have to install the audio driver in the  
Bonus Pack CD as well as an audio application supporting 5.1 Channel. Picture bellow represents the standard location of all  
speakers in 5.1 Channel sound tracks. Please connect the plug of your front speakers to the green “Speaker out” port, rear  
speakers’ plug to the blue “Line in” port and both of the center and subwoofer speakers to the red “MIC in” port.  
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Front Audio Connector  
If the housing has been designed with an audio port on the front panel, you’ll be able to connect onboard audio to front panel  
through this connector. By the way, please remove 5-6 and 9-10 jumper caps from the Front Audio Connector before connecting  
the cable. Please do not remove these 5-6 and 9-10 yellow jumper caps if there’s no audio port on the front panel.  
Pin 1  
1
AUD_MIC  
AUD_MIC_BIAS  
AUD_FPOUT_R  
NC  
AUD_GND  
AUD_VCC  
AUD_RET_R  
KEY  
AUD_FPOUT_L  
AUD_RET_L  
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S/PDIF (Sony/Philips Digital Interface) Connector  
S/PDIF (Sony/Philips Digital Interface) is a newest audio transfer file format, which provides impressive audio quality through  
optical fiber and allows you to enjoy digital audio instead of analog audio. Through a specific audio cable, you can connect the  
S/PDIF connector to other end of the S/PDIF audio module, which bears S/PDIF digital output. Normally there are two S/PDIF  
outputs as shown, one for RCA connector, the most common one used for consumer audio products, and the other for optical  
connector with better audio quality. Same as outputs, you can also connect RCA or optical audio products to input connectors  
on the module and have the voice or music come out from your computer. However, you must have a S/PDIF supported  
speaker/amplifier/decoder with S/PDIF digital input/output to connect to the S/PDIF digital input/output to make the most out of  
this function.  
Pin 1  
(RCA)  
S/PDIF OUT  
S/PDIF  
S/PDIF IN  
Cable  
S/PDIF OUT  
S/PDIF  
Connector  
S/PDIF IN  
(Optical)  
+5V  
1
S/PDIF Module  
(User Upgrade Optional)  
NC  
S/PDIFOUT  
GND  
S/PDIFIN  
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Dr. LED Connector (User Upgrade Optional)  
In conjunction with Dr. LED (User Upgrade Optional), which can easily show what kind of problem you may incur on your system  
during assembly. It can clearly indicate whether there is a component issue or an installed issue by the 8 LEDs on the front  
panel of Dr. LED. This helps you quickly self-diagnose your system status.  
Pin 1  
1
5
2
6
3.3V  
KEY  
GND  
S1  
S2  
S3  
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Dr. LED is a CD disc storage box with 8 LEDs on its front panel, the size of Dr. LED is exactly the same as 5.25 in floppy drive,  
so that it can be mount into normal 5.25 in drive bay of any housing.  
7
6
5
4
3
2
1
0
Boot O.K.  
KB  
HDD  
Floppy  
PCI  
Video  
Memory  
CPU  
The total 8 LEDs light up alternatively if the system fails in one of eight stages. Once the LED7 (latest LED) is lit, this indicates  
that the system has completed its boot-up procedure.  
The 8 LEDs indicate the following messages when lit:  
LED 0 - Indicates that the CPU may have been installed incorrectly or is damaged.  
LED 1 - Indicates that the memory may have been installed incorrectly or is damaged.  
LED 2 - Indicates that the AGP may have been installed incorrectly or is damaged.  
LED 3 - Indicates that the PCI card may have been installed incorrectly or is damaged.  
LED 4 - Indicates that the floppy disk drive may have been installed incorrectly or is damaged.  
LED 5 - Indicates that the HDD may have been installed incorrectly or is damaged.  
LED 6 - Indicates that the keyboard may have been installed incorrectly or is damaged.  
LED 7 - Indicates that the system is OK.  
Note: During POST (Power On Self Test) procedure, the  
Debug LED will light on sequentially from LED0 to LED7 until  
the system boot O.K  
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Case Open Connector  
The “CASE OPEN” header provides chassis intrusion-monitoring function. To make this function work, you have to enable it in  
the system BIOS, connect this header to a sensor somewhere on the chassis. So, whenever the sensor is being triggered by  
light or opening of the chassis, the system will send out beep sound to inform you. Please be informed that this useful function  
only applies to advanced chassis, you may purchase an extra sensor, attach it on your chassis, and make a good use of this  
function.  
Pin 1  
GND  
SENSOR  
1
Case Open  
Sensor Connector  
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CD Audio Connector  
This connector is used to connect CD Audio cable from CD-ROM or DVD drive to onboard sound.  
R
GND  
GND  
L
CD-IN  
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AUX-IN Connector  
This connector is used to connect MPEG Audio cable from MPEG card to onboard sound.  
R
GND  
GND  
L
AUX-IN  
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Game Port Bracket Supported  
This motherboard comes with a game port (Joystick-Midi) for you to connect any midi devices or joysticks. To use this function  
you have to have a joystick module and connect it with a game port cable to this port on the motherboard.  
Joystick Module  
(User Upgrade Optional)  
Pin1  
1
+5V  
+5V  
JAB1  
JACX  
GND  
GND  
JACY  
JAB2  
+5V  
JBB1  
JBCX  
MIDI_TXD  
JBCY  
JBB2  
MIDI_RXD  
KEY  
Note: This picture is for example only; it may not exactly look the same with the motherboard you purchased.  
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JP14 Clear CMOS Data Jumper  
You can clear CMOS to restore system default setting. To clear the CMOS, follow the procedures below.  
1.  
2.  
3.  
4.  
5.  
Turn off the system and unplug the AC power.  
Remove ATX power cable from connector PWR2.  
Locate JP14 and short pins 2-3 for a few seconds.  
Return JP14 to its normal setting by shorting pin 1 & pin 2.  
Connect ATX power cable back to connector PWR2.  
Pin 1  
1
1
Tip: When should I Clear CMOS?  
1. Boot fail because of overclocking…  
2. Forget password…  
Clear CMOS  
Normal Operation  
(default)  
3. Troubleshooting…  
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JP20 K7 Host Clock Selection  
This jumper is used to specify the relationship of PCI and FSB clock. Generally speaking, if you are not an over-clocker, we  
recommend you to set it to the default setting. Additionally, this motherboard also provides “1MHz Stepping CPU Adjustment”  
feature for overclockers to adjust CPU FSB frequency via BIOS setup program. Based on the CPU type, the adjustment range  
has four levels: 100~129, 130~160, 161~191 and 200-250MHz for your choosing. If you fix the CPU FSB frequency by JP20,  
the “1MHz Stepping CPU Adjustment” range will be changed and follow the JP20 setting.  
Pin 1  
JP20 K7 Host Clock  
Select Jumper  
1
2
FSB100  
FSB133  
FSB166  
FSB200  
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JP28 KB/Mouse Wake-up Jumper  
This motherboard provides keyboard / mouse wake-up function. You can use JP28 to enable or disable this function, which  
could resume your system from suspend mode with keyboard or mouse installed. The factory default setting is set to  
“Disable”(1-2), and you may enable this function by setting the jumper to pin2-3.  
JP28 KB/Mouse  
Wake-up Jumper  
1
Enable  
Disable  
(Default)  
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STBY LED  
STBY LED is AOpen’s considerate design that aims at providing you friendly system information. The STBY LED will light up  
when power is provided to the motherboard. This is a convenient indication for you to check the system power status in many  
circumstances such as power on/off, stand-by mode and RAM power status during Suspend to RAM mode.  
System  
Power LED  
Warning: Do not install or remove the  
DIMM module or others devices when  
the STBY LED lights on.  
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AGP Protection Technology and AGP LED  
With the outstanding R&D ability of AOpen and its specially developed circuit, this model implements a blend new technology to  
protect your motherboard from being damaged by over-voltaging of AGP card. When AGP Protection Technology is implemented,  
this motherboard will automatically detect the voltage of AGP card and prevent your chipsets from being burnt out. Please note  
that if you install a AGP card with 3.3V, which is not supported, the AGP LED on the motherboard will light up to warn you the  
possible damage of the exceeding voltage. You may contact your AGP card vendor for further support.  
AGP LED  
Warning: It is strongly recommended not  
to install a 3.3V AGP card, which is not  
supported. When you do so, the AGP LED  
on the motherboard will light up to warn you  
the possible damage.  
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Battery-less and Long Life Design  
This Motherboard implements Flash ROM and a special circuit that allows you to save your current CPU and CMOS Setup  
configurations without using the battery. The RTC (real time clock) can also keep running as long as the power cord is plugged.  
If you lose your CMOS data by accident, you can just reload the CMOS configurations from Flash ROM and the system will  
recover as usual.  
ATX Stand-by Power  
Battery  
Auto Switch  
Auto switching to ATX standby power as long  
RTC  
as AC power line is plugged. This smart design  
(Real Time Clock)  
can increases battery life if you still had battery  
00:00:00  
plugged on motherboard.  
Flash  
CMOS  
ROM  
Backup by EEPROM  
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Resetable Fuse  
Traditional motherboard has fuse for Keyboard and USB port to prevent over-current or shortage. These fuses are soldered  
onboard that user cannot replace it when it is damaged (did the job to protect motherboard), and the motherboard remains  
malfunction.  
With expensive Resetable Fuse, the motherboard can resume back to normal function after fuse had done its protection job.  
Resetable  
Fuse  
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2200μF Low ESR Capacitor  
The quality of low ESR capacitor (Low Equivalent Series Resistance) during high frequency operation is very important for the  
stability of CPU power. The idea of where to put these capacitors is another know-how that requires experience and detail  
calculation.  
Not only that, this motherboard implements 2200μF capacitor, which is much larger than normal capacitor (1000 or 1500μF)  
and it provides better stability for CPU power.  
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The power circuit of the CPU core voltage must be checked to ensure system stability for high speed CPUs (such as the new  
Pentium III, or when overclocking). A typical CPU core voltage is 2.0V, so a good design should control voltage between 1.860V  
and 2.140V. That is, the transient must be below 280mV. Below is a timing diagram captured by a Digital Storage Scope, it  
shows the voltage transient is only 143mv even when maximum 60 current is applied.  
Note: This diagram for example only; it may not exactly be the same motherboard.  
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PHOENIX-AWARD BIOS  
System parameters can be modified by going into BIOS Setup menu, this menu allows you to configure the system parameters  
and save the configuration into the 128 bytes CMOS area, (normally in the RTC chip or in the main chipset).  
The Phoenix-Award BIOS™ that installed in the Flash ROM of the motherboard is a custom version of an industry standard  
BIOS. The BIOS provides critical low-level support for standard devices such as hard disk drives, serial and parallel ports.  
Most BIOS setting of this motherboard had been optimized by AOpen’s R&D engineering team. But, the default setting of BIOS  
still can’t fine-tune the chipset controlling entire system. Hence, the rest of this chapter is intended to guide you through the  
process of configuring your system using setup.  
Currently there are two kinds of beep sound when system fails to boot at POST. The first type of beep sound consists of a single  
long beep and two short beeps, indicating a video error has failed BIOS from initializing video screen for displaying any  
additional information. The 2nd type of beep sound is a single long beep that beeping repeatedly, signaling a DRAM error has  
occurred. You may look over the indicated error according to different beep significances.  
To enter to BIOS setup menu, press <Del> when POST (Power-On Self Test) screen is shown on your monitor.  
Note: Because the BIOS code is the most often  
changed part of the motherboard design, the BIOS  
information contained in this manual may be  
different with actual BIOS that come with your  
motherboard.  
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How To Use Phoenix-Award™ BIOS Setup Program  
Generally, you can use the arrow keys to highlight items that you want to choose, then press <Enter> key to select, and use the  
<Page Up> and <Page Down> key to change setting value. You also can press <F1> key for help and press <Esc> key to quit  
Phoenix-Award™ BIOS setup program. The following table provides details about how to use keyboard in the Phoenix-Award™  
BIOS setup program. By the way, all products of AOpen also provides a special function in the BIOS setup, you can press <F3>  
key selecting preferred menu language to display.  
Key  
Description  
Page Up or +  
Page Down or -  
Enter  
Changing setting to next value or increase the value.  
Changing setting to previous value or decrease value.  
Select the item.  
Esc  
1. In main menu: Quit and don’t save any change.  
2. In sub menu: Exit current menu to main menu.  
Highlight previous item.  
Up Arrow  
Down Arrow  
Left Arrow  
Right Arrow  
F6  
Highlight next item.  
Move the light bar to left side of menu.  
Move the light bar to right side of menu.  
Load Setup Default setting value from CMOS.  
Load turbo setting value from CMOS.  
Save changed setting and exit setup program.  
F7  
F10  
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How To Enter BIOS Setup  
After you finish the setting of jumpers and connect correct cables. Power on and enter the BIOS Setup, press <Del> during  
POST (Power-On Self Test). Choose "Load Setup Defaults" for recommended optimal performance.  
Del  
Warning: Please avoid of using "Load Turbo Defaults", unless  
you are sure your system components (CPU, SDRAM, HDD,  
etc.) are good enough for turbo setting.  
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WinBIOS Utility  
In the past, users have to keep  
punching the DEL key at  
good timing during POST  
a
(Power-On-Self-Test) screen to get into the BIOS, which is  
inconvenient and clumsy. From now on, AOpen provides an  
easier way to configure your BIOS. WinBIOS is a customized  
utility for running exclusively on AOpen motherboards, which  
allows you to setup your BIOS under Windows environment.  
Designed with traditional-BIOS-alike interface, you may adjust  
BIOS parameter with clear descriptions for each item.  
WinBIOS is natively designed with multi-language support. There  
are various widely-use languages provided on our website for  
your downloading, which also helps to prevent wrong settings  
caused by misunderstanding of the languages. The only thing  
you have to do is to visit our official website and download your  
respective language pack (of few KB size), then double-click on  
it to activate the support with your chosen language.  
Moreover, with high scalability, either for newly bought motherboard or the latest BIOS version with new function, you don’t have  
to re-install the whole program again and again. All you have to do is to grab the latest profile from our website, simply  
double-click on it as well to support the latest version of your BIOS. You don’t have to spend any extra effort to have your  
motherboard supported by WinBIOS.  
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Function keys:  
Hotkey  
F1  
Function Description  
Get help description.  
Item Help  
It’s definitely easy to handle WinBIOS as if you’re using  
traditional BIOS setting. Users can use the arrow keys such  
F2  
as  
to move around the items in WinBIOS  
, “+” or “-” to change the setting  
F3  
Changing menu language.  
Load previous setting  
screen. And use  
F5  
value if they are available. Press  
to get back to the  
F6  
Load setup default setting  
Load turbo setting  
previous screen. Furthermore, the hotkeys shown in the table  
may help you and save your time. Some settings may not come  
into effect until you reboot your system.  
F7  
F10  
F12  
Save changed setting and exit setup program.  
Full Screen / Normal Mode  
Caution: After updating your BIOS, please remember to  
update WinBIOS profile as well. If the upgraded BIOS  
version is newer than WinBIOS profile, WinBIOS will not be  
able to launch and a dialog box with error message will pop  
up. This verification is designed on purpose to protect your  
BIOS from damaged by wrong profile version.  
For the latest WinBIOS profile and language pack modules, you  
may find them from AOpen official web site as shown below:  
(http://english.aopen.com.tw/tech/download/WinBIOS/default.htm)  
Note: Due to BIOS versions are updated in an extremely  
fast speed, it's strongly recommended to download the  
latest BIOS version and WinBIOS profile from our  
website upon receipt of the motherboard.  
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BIOS Upgrade under Windows environment  
With outstanding R&D ability of AOpen, we now bring you a whole new BIOS Flash wizard  
---- EzWinFlash. With an eye to users convenience, EzWinFlash combines the BIOS binary  
code and flash module together, so the only thing you have to do is just clicking on the  
utility you downloaded from web and let it helps you complete the flash process automatically. EzWinFlash detects your  
motherboard and checks the BIOS version cleverly to prevent your system from any possible failure. Moreover, EzWinFlash has  
been taken into consideration to go with any windows platform you might be using, no matter if you’re using Windows 95/98,  
98SE/ME, NT4.0/2000, or even the latest Windows XP.  
In the meanwhile, in order to provide a much more user-friendly operating environment, AOpen EzWinFlash is natively designed  
to have multi-language function to provide easier way for users’ usage in changing BIOS setting.  
Caution: By updating your motherboard, you  
are taking a risk of BIOS flash failure. If your  
motherboard is working stable, and there are no  
major bugs that had been fixed by a latter BIOS  
revision, we recommend that you DO NOT try to  
upgrade your BIOS.  
If you intent on upgrading, PLEASE BE SURE to  
get the right BIOS revision for the right  
motherboard model to avoid any possibility  
failure.  
Note: The model name on this BIOS picture is for reference only. It may not be the exact model name.  
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You may accomplish BIOS upgrade procedure with EzWinFlash by the following steps, and it’s STRONGLY RECOMMENDED to  
close all the applications before you start the upgrading.  
1. Download the new version of BIOS package zip file from AOpen official web site. (ex: http://english.aopen.com.tw/)  
2. Unzip the download BIOS package (ex: WAK77600N102.ZIP) with WinZip (http://www.winzip.com) in Windows  
environment.  
3. Save the unzipped files into a folder, for example, WAK77600N102.EXE & WAK77600N102.BIN.  
4. Double click on the WAK77600N102.EXE, EzWinFlash will detect the model name and BIOS version of your  
motherboard. If you had got the wrong BIOS, you will not be allowed to proceed with the flash steps.  
5. You may select preferred language in the main menu, then click [Start Flash] to start the BIOS upgrade procedure.  
6. EzWinFlash will complete all the process automatically, and a dialogue box will pop up to ask you to restart Windows.  
You may click [YES] to reboot Windows.  
7. Press <Del> at POST to enter BIOS setup, choose "Load Setup Defaults", then “Save & Exit Setup”. Done!  
It is strongly recommended NOT to turn off the power or run any application during FLASH PROCESS.  
Warning: The new BIOS upgrade will  
permanently replace your original  
BIOS’s settings when flashing. You  
may need to reconfigure your BIOS  
setting so that your system can go  
back to work as normal.  
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Vivid BIOS technology  
Have you been fed up with the conservative and immutable POST screen? Let’s rule out  
the tradition idea that POST screen are stiff and frigid, and let AOpen show you the newly  
developed VividBIOS to experience the lively vivid colorful POST screen!  
Unlike earlier graphic POST screen which could occupy the whole screen and mask text information during POST, AOpen  
VividBIOS deals with graphics and texts separately, and makes them running simultaneously during POST. With this innovative  
design, VividBios now brings you a beautiful and sleek 256 colors screen without missing any important information shown on  
POST screen.  
In addition, the limited space of BIOS ROM is another big issue. When all of the traditional BIOS can only show  
space-consuming and uncompressed Bitmap, AOpen has considerately tuned the BIOS to next generation, to recognize the  
smaller-sized GIF format and even dynamic-showing GIF animation.  
You may use EzSkin utility to change your Vivid BIOS screen. If you see this little logo  
shown beside your model name  
on the BIOS download page, http://english.aopen.com.tw/tech/download/skin, it is assured that your motherboard supports this  
innovative feature!  
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Driver and Utility  
There are motherboard drivers and utilities included in AOpen Bonus CD. You don’t need to install all of them in order to boot  
your system. But after you finish the hardware installation, you have to install your operation system first (such as Windows XP)  
before you can install any drivers or utilities. Please refer to your operation system’s installation guide.  
Auto-run Menu from Bonus CD  
You can use the auto-run menu of Bonus CD. Choose the utility and driver and select model name.  
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Installing VIA 4 in 1 Driver  
You can install the VIA 4 in 1 driver (IDE Bus master (For Windows NT use), VIA ATAPI Vendor Support Driver, VIA AGP, IRQ  
Routing Driver (For Windows 98 use), VIA Registry (INF) Driver) from the Bonus Pack CD auto-run menu.  
Warning: To take advantage of ATA133, it is a must to  
install the latest version of VIA 4in1 driver in the Bonus CD.  
For Windows2000, it cannot supports ATA133 even after  
installing the latest version of VIA 4-in-1 driver until the  
new release of Service-Pack 3 from Microsoft.  
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Installing Audio Driver  
This motherboard comes with RealTek ALC650 AC97 CODEC and the sound controller is in VIA South Bridge chipset. You can  
find the audio driver from the Bonus Pack CD auto-run menu.  
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Installing USB2.0 Driver  
This motherboard comes with USB2.0 function. You can install USB2.0 Driver under Windows 98SE, Windows ME, Windows  
2000 and Windows XP from the Bonus Pack CD auto-run menu.  
Note: After installing USB 2.0 driver under WinME, there would be a "green question  
mark" on "VIA USB 2.0 Enhanced Host Controller" item. Please rest assured that it is  
not an error message. You may just ignore it.  
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Installing LAN Driver  
This motherboard comes with RealTek RTL8100BL controller on board, which is a highly-integrated Platform LAN connect  
device providing 10/100 Mbps Ethernet for office and home use. For Windows 98, Windows ME, Windows 2000 and Windows  
XP, you can install the LAN driver form the Bonus Pack CD auto-run menu.  
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*************************************************************************  
Installing drivers on Windows 95: (Golden version, Win95A and OSR2)  
*************************************************************************  
1. Ask you to select which driver you want to install, select "Driver from disk provided by hardware manufacturer".  
2. Specify the setup file pathname  
[CD-ROM]:\Driver\LAN\RTL8100\Windows\95\WIN95A (for Windows 95 and Win95A) or  
[CD-ROM]:\Driver\LAN\RTL8100\Windows\95\W95OSR2 (for Windows 95 OSR2).  
3. Windows 95 will appear some messages to insert Windows 95 system disk to complete setup step.  
4. Windows 95 will finish the other installation procedure automatically, then you restart the system.  
******************************************************************  
Installing drivers on Windows NT: (Version 3.5, 3.51 & 4.0)  
******************************************************************  
When you are in Windows NT :  
1. In the Main group of NT, select the "Control Panel" icon.  
2. In the Control Panel window, choose the "Network" icon.  
3. In the Network Settings dialog box, choose the "Add Adapter" button. The Add Network Adapter dialog box appears.  
4. In the list of network cards, select "<other> Requires disk from manufacturer", and then press <Enter> button.  
5. Enter drive and pathname  
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[CD-ROM]:\Driver\LAN\RTL8100\Windows\NT (for NT 4.0) which is the path where the setup file OEMSETUP.INF is located, and  
then choose the OK button.  
6. The screen will appear "Select Line Speed" dialog box which is provided by RTL8139.SYS driver. The default value is "auto"  
so that the RTL8139 PCI Fast Ethernet adapter and its driver RTL8139.SYS will auto-detect the line speed, 10 Mb or 100Mb,  
while the RTL8139.SYS is loading. The other values, "10" or "100", are only used when you want to forced RTL8139 PCI Fast  
Ethernet adapter to 10Mb or 100Mb.  
7. The screen will appear "Input Ethernet ID" dialog box which is provide by RTL8139.SYS driver. This option is only required  
when you have more than one Realtek RTL8139 PCI Fast Ethernet adapters on this computer. Select "SKIP" if only one adapter  
is installed on this computer.  
8. "Bus Location" display in next screen. Your machine contains more than one hardware bus, please select the Bus Type and  
Bus number on which your network adapter card is installed.  
9. NT will then perform the binding process. If any additional network software options were installed, you may be prompted for  
specific information for these packages.  
10. Restarting your system you will acquire network service.  
NOTES:  
* Installing Multiple LAN Adapters: Enter Windows NT and follow above setup procedure step 2, in the "Network Settings" dialog  
box, choose the "Configure…" button. The "Input Ethernet ID" dialog box appears and input adapter's Ethernet ID. Then, select  
OK and close NETWORK SETUP. Select SKIP if only one adapter is installed on this computer.  
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AOConfig Utility  
AOpen always dedicated to provide users a much friendlier computer environment. We now bring  
you a comprehensive system detective utility. AOconfig is a Windows based utility with user-friendly  
interface that allows users to obtain information of the operation system and hardware such as motherboard, CPU, memory, PCI  
devices and IDE devices. The powerful utility also displays the version of BIOS and firmware for your convenience of  
maintenance.  
Moreover, AOconfig allows users to save information in *.BMP or *.TXT format which users may collect the system information  
in detail and send them to AOpen directly for technical support or further diagnosis of system problem.  
1. The system page shows the  
detail information of the  
motherboard, the operating  
system, the processor, and  
BIOS version.  
2. The PCI device page shows  
the configurations of all PCI  
devices installed on your  
motherboard.  
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3. This page presents the IDE  
devices information, such as  
the serial number, the  
manufacturer, the firmware  
version, and capacity.  
4. From this page, users may  
obtain the technical support  
information of AOpen.  
Moreover, detailed information  
could be saved in .bmp or .txt  
format.  
NOTE: AOconfig can be used in Windows 98SE/ME, NT4.0/2000, or even the latest Windows XP. Please be  
informed that AOconfig can only be operated in a system equipped with an AOpen motherboard. Meanwhile, all  
applications must be closed before starting AOconfig.  
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The noise is gone!! ---- SilentTek  
As the clock of CPU keeps rocketing higher and higher, it inevitably brings higher heat and  
system temperature in a relative way. The way we deal with this heat problem, however, is to  
spare no effort to add one fan after another to protect our pampered system, expecting these  
fans could cool down our machine as much as it could.  
But at the same time, we believe that same amount of users are affected terribly while working with their PC by the irritating  
noises of these fans. As a matter of fact, we do not have to get our fans running at such a high speed in most cases; on the  
contrary, we discovered that having your fans running at appropriate time and speed could not only reduce the noise, but also  
consume the least power the system  
needed, so as to prevent over-wasting  
of energy resource.  
Today, AOpen Motherboard is honored  
to bring you a new overall solution,  
SilentTek, to have your system quiet. To  
collocate with hardware circuit, BIOS  
and the utility under Windows,  
SilentTek combined “Hardware-Status  
Monitoring”, “Overheat Warning” and  
“Fan Speed Control” with user-friendly  
interfaces to provide you  
a
perfect  
balance between noises, system  
performance and stability.  
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In “Temp/Fan/Case” page, you may get aware of the  
current temperature of CPU and the heat inside chassis,  
plus checking if fans are running properly.  
The first image you have here is the Voltage Status  
page. You can find current status of all voltages and set  
your expected margins of warning level.  
You may set the highest  
margin of your CPU and  
Of course, you may set your  
You may check your  
system voltage from the  
indicating bar here.  
defaulted lowest margin for  
your fans and the SilentTek  
would also pop up a message  
box and alarm you when the  
fan is rotating slower than this  
specified speed.  
system  
temperature  
as  
default, and SilentTek would  
pop up a message box and  
alert you with alarm when the  
temperature goes beyond the  
specified margin.  
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The following page is surely the most important part of this utility. You may control the rotation speed of specific fans that you have got  
the options inside in this page.  
1. Smart FAN Control: This is the default setting of  
SilentTek and can be used for any branded computer  
housing. With a special algorithm developed by AOpen,  
the fan speed is automatically adjusted by the factors of  
CPU and ambient temperature. Ease-of-use and trouble  
free at your service.  
2. Fixed FAN Control: Under this setting, a desired fan  
speed is set fixed when operating.  
3. Multiple Level Control: This is the most versatile  
setting that allows you to set fan speed in relation to  
temperature. You may find that this setting fits you best.  
4. AOpen Recommend Setting: This setting is designed  
specifically for AOpen housing. A series of lab tests were  
conducted under the real world scenario to determine  
optimum fan speed to reduce noise level within CPU  
working condition and temperature. Most of the time, the  
fan would remain still when CPU is not fully utilized.  
CD-ROM Rotation Speed Control: by enabling the CD-ROM  
Rotation Speed Control, you can adjust the rotation speed of your  
Note: Due to hundreds different brands of fan on the  
CD-ROM. When you set the speed to high level, the CD-ROM will  
market, inaccuracy may happen in some cases when you  
work at its fastest speed and it will run at basic required speed  
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had your rotation speed adjusted. It is still under the  
while you set the value to low speed.  
criterion and please rest assured that it won’t cause any  
problem to your system.  
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EzClock  
Have you ever thought how great it would be if you can adjust the frequency setting on your motherboard under Windows environment  
and be a real master of your system? Everybody knows that the ratio and frequency setting are key factors to influence the system  
performance, however, it’s absolutely not an easy task for an amateur to adjust the setting value. On most traditional motherboards, you  
have to get into BIOS screen for the frequency and  
reboot the system again and again. But from now on,  
you don’t have to surfer the boring stuffs anymore.  
With brand-new and user-friendly EzClock that  
AOpen specially designs for his users, you can  
adjust those important values as you please and  
think of suitable. This tailor-made EzClock allows you  
to set the voltage and frequency of CPU, VGA, PCI  
and memory under Windows environment as well as  
in BIOS setting page; even better, those settings will  
be displayed realtime. Having this handy EzClock,  
you can monitor the system when you’re fine-tuning  
the performance of your system. It provides you  
detailed and necessary information. Now let’s take a  
look how it works on utility, BIOS and POST.  
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How You Adjust the Settings in EzClock Utility  
In EzClock utility, you can adjust CPU Front Side Bus (FSB), the voltage and frequency of VGA, AGP, PCI and DRAM. Besides, the  
CPU related information such as CPU voltage, temperature and CPUFAN rotation speed will also be displayed on this utility.  
On the left circle area shows Ratio, FSB and frequency information  
about CPU. When the values are set to factory default, the light on  
the top and bottom of the circle will show green and it will vary as you  
change these CPU settings.  
CPU Color Bars:  
The color bar will  
light on and show  
different colors as  
values change. On  
default values, it  
will show green.  
CPU Ratio, FSB and frequency displaying area:  
You can adjust CPU FSB here by entering preferred value.  
On the right part of the panel is the section that you adjust the settings of  
VGA, AGP, PCI and memory. To adjust the voltage and clock frequency of  
those installments, you can press “-“ or “+” on corresponding items. The  
color parts represent the situation of values. The higher value you set, the  
light on the color bar goes to right and turns red. After finishing those value  
settings, you can press “S” button on the upper right hand corner to save  
changes to CMOS.  
Control buttons:  
“_” button allows  
you to minimize the  
utility and “X” button  
to close the utility.  
Pressing “S” button  
you can save the  
changes to CMOS.  
VGA, AGP, PCI and DRAM Voltage / Clock Area:  
Pressing “_” and “+” buttons, you can adjust the  
voltage and clock frequency values of onboard  
VGA, AGP, PCI and DRAM.  
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On the bottom rectangular panel represents CPU fan speed, CPU voltage and CPU temperature. The three color bars on the right hand  
side will light on according to operation temperature. Please refer to the picture shown above.  
CPU Color Bars:  
CPU Fan, Voltage and Temperature:  
representing CPU fan speed, CPU  
voltage and CPU temperature in  
Celsius and Fahrenheit degrees.  
The color bars will light on  
according to CPU operation  
temperature.  
How You Adjust the Settings in BIOS  
Apart from EzClock utility, the voltage and frequency values of CPU, PCI and memory can also be adjusted on BIOS page. By pressing  
“+”, “-“, “PgUp” or “PgDn” keys, you can adjust the frequency values of CPU Bus, PCI Bus and DRAM.  
Also, the same keys help you adjust the  
voltage of CPU and DDR settings. Some  
values may change while you adjust the  
settings. You can press “F10” to save the  
changes you’ve made.  
Function Keys  
Description  
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How Your Boot Screen Looks Like  
After you finish setting BIOS, these setting values  
will be displayed on the boot screen like the  
shown picture here.  
Every time you boot your system, both default and  
current settings will pop up on the screen. Your  
personal settings that had been adjusted earlier  
will be highlighted; thus, you can have clear idea  
how your system functions and monitor your  
system more easily.  
Current values  
of your system  
NOTE: Due to BIOS versions are  
updated in an extremely fast speed, it's  
strongly recommended to download the  
latest version of EzClock from our website  
for best compatibility.  
The highlighted setting  
value you manually  
Default settings of  
this motherboard  
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Glossary  
AC97 CODEC  
Basically, AC97 CODEC is the standard structure of PCI sound card. As we know, computer is digital-based, but music is based  
on analog-based. Therefore, there must be a process to turn digital into analog during the last stage processing of sound in  
computer. Hence, the component on sound card that play this important task is what we called CODEC.  
Audio CODEC 97 (briefly called AC97) is the specification regulated by Intel, and it’s about the structure of audio conversion.  
The special place about CODEC is that it is separated from sound card (CODEC is an independent chipset). Therefore, PCI  
sound card could possess with 90db and do other application process as well. We called CODEC that meets this structure AC97  
CODEC.  
ACPI (Advanced Configuration & Power Interface)  
ACPI is the power management specification of PC97 (1997). It intends to save more power by taking full control of power  
management to operating system and bypass BIOS. The chipset or super I/O chip needs to provide standard register interface  
to operating system (such as Windows 98). This is a bit similar as the PnP register interface. ACPI defines ATX momentary soft  
power switch to control the power state transition.  
ACR (Advanced Communication Riser)  
Building on the PC motherboard riser architecture, ACR slot is backward compatible with AMR but beyond the limitation of it.  
The ACR specification is designed to support modem, audio, Local Area Network (LAN) and Digital Subscriber Line (DSL).  
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AGP (Accelerated Graphic Port)  
The main function of AGP simply put is to tell monitor what screen information had to be shown, a visual transmission device  
actually. With the rapid developing of AGP card, we can see that it had been developed from single colorful AGP card to 2D and  
3D graphic. AGP supports only memory read/write operation and single-master single-slave one-to-one only. Though AGP and  
PCI share the same algorithm of 32-bit, its frequencies are 66MHz and 33MHz respectively. AGP interface had been  
developed from 2X to 8x.  
1X AGP, data transfer rate is 66MHz x 4byte x 1 = 264MB/s  
2X AGP, data transfer rate is 66MHz x 4byte x 2 = 528MB/s  
4X AGP, data transfer rate is 66MHz x 4byte x 4 = 1056MB/s.  
8X AGP, data transfer rate is 66MHz x 4byte x 8 = 2112MB/s.  
AMR (Audio/Modem Riser)  
The CODEC circuit of AC97 sound/modem solution can be put on motherboard or put on a riser card (AMR card) that connects  
to motherboard through AMR connector.  
ATA (AT Attachment)  
Before talking about ATA (AT Attachment), we must understand DMA (Direct Memory Access), which allows devices to skip the  
CPU devices and access memory directly. DMA specification could not only eliminate the workload of CPU, but also accelerate  
the transmission of data. DMA begins with a data transfer rate of 16.6MB/Sec, but afterward developed to new data rate of  
33.3MB/Sec, which is twice the data rate and we called it Ultra DMA. ATA details power and data signals between the drive  
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and integrated drive controller and the computer's motherboard. Two drives (master and slave) are supported. The ATA  
specification allows the drive to connect directly to the ISA bus on the computer. ATA transfer rate then had been developed to  
133MHz/Sec and would come out with fastest rate later (please refer to Serial ATA).  
DMA, data transfer rate is 16.6MHz/s.  
Ultra DMA, data transfer rate is 16.6MHz x 2 = 33MB/s.  
ATA/66, data transfer rate is 16.6MHz x 4 = 66MB/s.  
ATA/100, data transfer rate is 16.6MHz x 6 = 100MB/s.  
ATA/133, data transfer rate is 16.6MHz x 8 = 133MB/s.  
(ATA/133 uses both rising edge and falling edge as ATA/66 but clock cycle time is reduced to 30ns.)  
BIOS (Basic Input/Output System)  
BIOS, is a set of assembly routine/program that reside in EPROM or Flash ROM. BIOS controls Input/output devices and other  
hardware devices of motherboard. In general, to provide hardware independent portability, operation system and drivers is  
required to access BIOS without directly access hardware devices.  
Bluetooth  
Bluetooth is a wireless transferring technology that enables short-range wireless connections between desktop and laptop  
computers, personal digital assistants (PDAs), cellular phones, printers, scanners, digital cameras and even home  
appliances. The principle of Bluetooth (a chipset) is to transfer information and voices at the frequency of ISM Band. Every  
Bluetooth technology devices do come with a standard address for you to connect one-to-one or one-to-seven (to form a  
Pico-net), with transferring range up to 10 meters (100 meters to follow), using low power radio. Bluetooth do not only possess  
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high transfer rate of 1MB/s, it also could be encrypted with pin code. With hopping rate of 1600 hops per second, it’s difficult to  
be intercepted and are less interrupted by electromagnetic wave.  
CNR (Communication and Networking Riser)  
The CNR specification provides the PC industry the opportunity to deliver a flexible and cost reduced method of implementing  
LAN, home networking, DSL, USB, wireless, audio and modem subsystems widely used in today's "connected PCs". The CNR  
specification is an open industry specification and is supported by OEMs, IHV card manufacturers, silicon supplier and  
Microsoft.  
DDR (Double Data Rate) RAM  
DDR RAM utilizes the existing SDRAM (For ex, PC-100, PC-133) infrastructure and technology while doubling the nominal  
bandwidth available to systems in an easy to design and simple to adopt way. Based on FSB frequency, DDR RAM on the  
market are DDR200, DDR266 and DDR333 with more coming around soon.  
DDR200, transfer bandwidth up to 200x64/8=1600MB/s (PC1600)  
DDR266, transfer bandwidth up to 266x64/8=2100MB/s (PC2100)  
DDR333, transfer bandwidth up to 333x64/8=2700MB/s (PC2700)  
DDR400, transfer bandwidth up to 400x64/8=3200MB/s (PC3200)  
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ECC (Error Checking and Correction)  
The ECC mode needs 8 ECC bits for 64-bit data. Each time memory is accessed; ECC bits are updated and checked by a  
special algorithm. The ECC algorithm has the ability to detect double-bit error and automatically correct single-bit error while  
parity mode can only detect single-bit error.  
EEPROM (Electronic Erasable Programmable ROM)  
Also known as E2PROM. Both EEPROM and Flash ROM can be re-programmed by electronic signals, but the interface  
technology is different. Size of EEPROM is much smaller than flash ROM.  
EPROM (Erasable Programmable ROM)  
Traditional motherboard stores BIOS code in EPROM. EPROM can only be erased by ultra-violet (UV) light. If BIOS has to be  
upgraded, you need to remove EPROM from motherboard, clear by UV light, re-program, and then insert back.  
EV6 Bus  
EV6 Bus is the technology of Alpha processor from Digital Equipment Corporation. EV6 bus uses both rising and falling clock  
edge to transfer data, similar as DDR RAM or ATA/66 IDE bus.  
EV6 Bus Speed = CPU external bus clock x 2.  
200 MHz EV6 bus, 200MHz = 100 MHz external bus clock x 2  
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FCC DoC (Declaration of Conformity)  
The DoC is component certification standard of FCC EMI regulations. This standard allows DIY component (such as  
motherboard) to apply DoC label separately without a shielding of housing.  
FC-PGA (Flip Chip-Pin Grid Array)  
FC means Flip Chip, FC-PGA is a package of Intel for Pentium III for 0.18µm process CPU, which can be plugged into SKT370  
socket.  
FC-PGA2 (Flip Chip-Pin Grid Array)  
After FC-PGA, FC-PGA2 is the package for 0.13µm process CPU developed by Intel, which can be plugged into SKT423/478  
socket as well.  
Flash ROM  
Flash ROM can be re-programmed by electronic signals. It is easier for BIOS to upgrade by a flash utility, but it is also easier to  
be infected by virus. Because of increase of new functions, BIOS size is increased from 64KB to 512KB (4M bit).  
Hyper Threading  
Hyper-Threading technology is an innovative design from Intel that enables multi-threaded software applications to process  
threads in parallel within each processor resulting in increased utilization of processor execution resources. As a result, an  
average improvement of ~40% in CPU resource utilization yields higher processing throughput.  
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IEEE 1394  
IEEE 1394, which also called Firewire, is a serial data transfer protocol and interconnection system. The main feature of the  
Firewire that assures its adoption for the digital video and audio (A/V) consumer application is its low cost. Fire wire interface is  
capable of supporting various high-end digital A/V applications, such as consumer A/V device control and signal routing, Digital  
Video (DV) editing, home networking, and more than 32 channels of digital mixing. Gone are those days of expensive video  
capture cards. Firewire allows for video capture from both newer DV camcorders with Firewire ports and older analog  
equipment using A/V to Firewire converters.  
The advantages of the IEEE1394:  
High data transfer rate – Start from 400 Mbps, (with 800/1600/3200 Mbps coming soon), which is about 30 times faster than  
USB 1.1.  
Supports up to 63 devices (16 - daisy chained) with cable length up to about 4.5 m (14 feet).  
Hot-pluggable (like USB). No need to turn of your device to connect or disconnect, and you don't need to reboot your PC. Also,  
it is a plug-and-play bus.  
IEEE1394 is very easy to connect (Like USB1.1/2/0).  
Parity Bit  
The parity mode uses 1 parity bit for each byte, normally it is even parity mode, that is, each time the memory data is updated,  
parity bit will be adjusted to have even count "1" for each byte. When next time, if memory is read with odd number of "1", the  
parity error is occurred and this is called single bit error detection.  
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PCI (Peripheral Component Interface) Bus  
Developed by Intel, Peripheral Component Interconnect (PCI) is a local bus standard. A bus is a channel used to transfer data to  
(input) and from (output) a computer and to or from a peripheral device. Most PCs have a PCI bus usually implemented at  
32-bits providing a 33 MHz clock speed with a throughput rate of 133 MBps.  
PDF Format  
With PDF file, it is easy to do universal document exchange. Virtually any document may be converted in Portable Document  
Format (PDF). Contents in PDF documents are exactly the same as the original file, including fonts and graphics, and they can  
be distributed by e-mail or stored on the World Wide Web, an intranet, a file system, or a CD-ROM for other users to view on  
any platforms. You may download Acrobat Reader in order to read PDF file from its website (www.adobe.com).  
PnP (Plug and Play)  
Oversimplified, Plug-and-Play automatically tells the software (device drivers) where to find various pieces of hardware (devices)  
such as modems, network cards, sound cards, etc. Plug-and-Play's task is to match up physical devices with the software  
(device drivers) that operates them and to establish channels of communication between each physical device and its driver.  
POST (Power-On Self Test)  
The BIOS self-test procedure after power-on, sometimes, it is the first or the second screen shown on your monitor during  
system boot.  
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PSB (Processor System Bus) Clock  
PSB Clock means the external bus clock of CPU.  
CPU internal clock = CPU PSB Clock x CPU Clock Ratio  
RDRAM (Rambus Dynamic Random Access Memory)  
A DRAM technology developed by Rambus Corporation*, to achieve high speed of memory through the use of multiple channels  
in parallel by 16-bits. Basically, RDRAM uses new structure of Multibank, which is quite different from FPM, EDO, SDRAM.  
Using different memory module as well, RDRAM uses “RIMM” with transfer rate of 600/700/800MHz, providing bandwidth as  
high to 1.6GB.  
RIMM (Rambus Inline Memory Module)  
184-pin memory module that supports RDRAM memory technology. A RIMM memory module may contain up to maximum of 16  
RDRAM devices.  
SDRAM (Synchronous DRAM)  
SDRAM is one of the DRAM technologies that allow DRAM to use the same clock as the CPU host bus (EDO and FPM are  
asynchronous and do not have clock signal). It is similar as PBSRAM to use burst mode transfer. SDRAM comes in 64-bit  
168-pin DIMM and operates at 3.3V, and have been gradually replaced by DDR RAM.  
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SATA (Serial ATA)  
The Serial ATA specification is designed to overcome speed limitations while enabling the storage interface to scale with the  
growing media rate demands of PC platforms. Serial ATA is to replace parallel ATA with the compatibility with existing operating  
systems and drivers, adding performance headroom for years to come. It is developed with data transfer rate of 150  
Mbytes/second, and 300M/bs, 600M/bs to come. It reduces voltage and pins count requirements and can be implemented with  
thin and easy to route cables.  
SMBus (System Management Bus)  
SMBus is also called I2C bus. It is a two-wire bus developed for component communication (especially for semiconductor IC).  
For example, set clock of clock generator for jumper-less motherboard. The data transfer rate of SMBus is only 100Kbit/s, it  
allows one host to communicate with CPU and many masters and slaves to send/receive message.  
SPD (Serial Presence Detect)  
SPD is a small ROM or EEPROM device resided on the DIMM or RIMM. SPD stores memory module information such as DRAM  
timing and chip parameters. SPD can be used by BIOS to decide best timing for this DIMM or RIMM.  
USB 2.0 (Universal Serial Bus)  
A Universal Serial Bus (USB) is an external bus (an interconnection) standard that supports data transfer rates of 12 Mbps. A  
single USB port can be used to connect up to 127 peripheral devices, such as mouse, modems and keyboards. Introduced in  
1996, USB has completed replaced serial and parallel ports. It also supports plug-and-play installations and hot plugging  
Plug-and-play is the ability to add and remove devices to a computer while the computer is running and have the operating  
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system automatically recognize the change. USB 2.0, which supports data transfer rates of 480 Mbps, has been widely used in  
motherboard these days.  
VCM (Virtual Channel Memory)  
NEC’s Virtual Channel Memory (VCM) is a new DRAM core architecture that dramatically improves the memory system’s ability  
to service multimedia requirements. VCM increases memory bus efficiency and performance of any DRAM technology by  
providing a set of fast static registers between the memory core and I/O pins. Using VCM technology results in reduced data  
access latency and reduced power consumption.  
Wireless LAN – 802.11b  
802.11 is a specification developed by IEEE and Wireless LAN technology, which is an interface between a wireless client and a  
base station or between two wireless clients.  
802.11 family includes the following specifications and with more coming:  
802.11 = 1 or 2 Mbps transmission in the 2.4 GHz band, using either frequency hopping spread spectrum (FHSS) or direct  
sequence spread spectrum (DSSS)).  
802.11a = 54 Mbps in the 5GHz band, using orthogonal frequency division multiplexing)  
802.11b (11 Mbps transmission in the 2.4 GHz band, using direct sequence spread spectrum (DSSS).  
ZIP file  
A compressed file format to reduce file size. To unzip file, run shareware PKUNZIP (http://www.pkware.com/) for DOS and other  
operating system or WINZIP (http://www.winzip.com/) for windows environment.  
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Troubleshooting  
If you encounter any trouble to boot you system, follow the procedures accordingly to resolve the problem.  
Start  
Turn off the power and unplug the AC power cable, then remove all of the  
add-on cards and cables, including VGA, IDE, FDD, COM1, COM2 and  
printer.  
Make sure if all jumper settings are correct.  
Clear CMOS, then plug the ATX power cord correctly.  
Next  
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Continue  
Install the VGA card. Then connect your monitor and keyboard.  
Turn on the power  
Yes  
No  
and check if the power  
supply and CPU fan work  
properly.  
The problem is probably caused by  
power supply or motherboard failure.  
Please contact your reseller or local  
distributor for repairing.  
Next  
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Continue  
No  
Perhaps your VGA card  
Check if there is display?  
or monitor is defective.  
Yes  
Press <Ctrl> and <Alt> key at the same time, hold  
them and then press <Del> to reboot the system.  
No  
It is very possible that your  
keyboard is defective.  
Check if the system  
reboots?  
Yes  
Next  
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Continue  
During system rebooting, press <Del> to enter BIOS  
setup. Choose “Load Setup Default”.  
Turn off the system and re-connect IDE cable.  
No  
The problem should be  
Check if the system can  
caused by the IDE  
cable or HDD itself.  
reboot successfully?  
Yes  
Re-install the operating system such as Windows 98.  
End  
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Technical Support  
Dear Customer,  
Thanks for choosing AOpen products. To provide the best and fastest service to our customer is our first priority. However, we  
receive numerous emails and phone-calls worldwide everyday, it is very hard for us to serve everyone on time. We recommend  
you follow the procedures below and seek help before contact us. With your help, we can then continue to provide the best  
quality service to more customers.  
Thanks very much for your understanding!  
AOpen Technical Supporting Team  
Online Manual: To download manual, please log on and then select your preferred language. Under “Type” directory,  
choose “Manuals” to go to our manual database. You can also find the manual and EIG in AOpen Bonus Pack.  
1
http://download.aopen.com.tw/downloads  
Test Report: We recommend you to choose board/card/device from the compatibility test reports for assembling your  
PC. It may prevent incompatibility problems.  
2
http://english.aopen.com.tw/tech/report/default.htm  
FAQ: Here we list problems that users often encounter and FAQ (Frequently Asked Questions). You may select your  
preferred language after log on and find a solution to your problem.  
3
http://club.aopen.com.tw/faq/  
Download Software: After log on and having language selected, you may get the latest updated BIOS/utility and  
drivers you need under “Type” directory. In most case, newer versions of drivers and BIOS have solved earlier bugs or  
4
compatibility problems.  
http://download.aopen.com.tw/downloads  
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eForum: AOpen eForum is provided to discuss our products with other users, in which your problem probably had  
been discussed before or will be answered. After log on, you may select your preferred language under  
“Multi-language”.  
5
6
7
http://club.aopen.com.tw/forum/  
Contact Distributors/Resellers: We sell our products through resellers and integrators. They should know your  
system configuration very well and should be able to solve your problem efficiently and provide important reference  
for you.  
Contact Us: Please prepare detail system configuration and error symptom before contacting us. The part number,  
serial number and BIOS version are also very helpful.  
Part Number and Serial Number  
The Part Number and Serial number are printed on bar code label. You can find this bar code label on the outside packing, or on  
component side of PCB. For example:  
Part No.  
Part No.  
Serial No.  
Serial No.  
P/N: 91.88110.201 is part number, S/N: 91949378KN73 is serial number.  
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Model name and BIOS version  
Model name and BIOS version can be found on upper left corner of first boot screen (POST screen). For example:  
AK77-600N R1.02 Mar. 01.2003 AOpen Inc.  
Award Plug and Play BIOS Extension v1.0A  
Copyright © 2003, Award Software, Inc.  
AK77-600N is model name of motherboard, R1.02 is BIOS version.  
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Product Registration  
Thank you for choosing AOpen product. AOpen encourages you to spend few minutes in completing the following product  
registration. To register your product will ensure the high quality of services from AOpen. After the registration, you will:  
•
Have opportunities to play online slot machine and win a prize from AOpen by accumulating your bonuses for later prize  
exchange.  
•
•
Be upgraded to gold membership of Club AOpen program.  
Receive email notification about product safety alerts. Its purpose is to alert consumers quickly and conveniently when  
products contain technical issues.  
•
•
•
•
•
•
Receive email notification about latest product's announcements.  
Be able to personalize your AOpen web pages.  
Receive e-mail notification about latest BIOS/Driver/Software release information.  
Have opportunities to participate special product promotional programs.  
Enjoy higher service priority to receive technical assistance provided by AOpen specialists worldwide.  
Be able to join the discussions of web-based news groups.  
AOpen makes sure that the information you provide is encrypted, so that it cannot be read or intercepted by other people or  
companies. Further, AOpen will not disclose any of information you submitted under any conditions. Please consult our online  
privacy policy for further information on our company policy.  
Note: If registering products purchased from different dealers/retails and/or purchased on different  
dates, please submit a separate form for each product.  
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How to Contact Us  
Please do not hesitate contact us if you have any problem about our products. Any opinion will be appreciated.  
America  
Pacific Rim  
Europe  
AOpen America Inc.  
Tel: 1-510-489-8928  
Fax: 1-510-489-1998  
AOpen Inc.  
AOpen Computer b.v.  
Tel: 31-73-645-9516  
Email: [email protected]  
Tel: 886-2-3789-5888  
Fax: 886-2-3789-5899  
Japan  
China  
Germany  
AOpen Japan Inc.  
Tel: 81-048-290-1800  
Fax: 81-048-290-1820  
艾爾鵬國際貿易(上海)有限公司  
Tel: 86-21-6225-8622  
Fax: 86-21-6225-7926  
AOpen Computer GmbH.  
Tel: 49-1805-559191  
Fax: 49-2102-157799  
Web Site: www.aopen.com  
E-mail: Send us email by going through the contact form below.  
English  
http://english.aopen.com.tw/tech/default.htm  
http://www.aopen.co.jp/tech/default.htm  
http://www.aopen.com.tw/tech/default.htm  
http://www.aopencom.de/tech/default.htm  
Japanese  
Chinese  
German  
Simplified Chinese  
http://www.aopen.com.cn/tech/default.htm  

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