What’s in this manual................................................................................................................................................................2
You Must Notice........................................................................................................................................................................8
Before You Start........................................................................................................................................................................9
About “Optional” and “Upgrade Optional”…....................................................................................... ......................................18
CPU Installation ......................................................................................................................................................................20
CPU Jumper-less Design........................................................................................................................................................23
CPU and System Fan Connector (with H/W Monitoring)..........................................................................................................26
Front Panel Connector............................................................................................................................................................29
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ATX Power Connector.............................................................................................................................................................30
AC Power Auto Recovery........................................................................................................................................................30
IDE and Floppy Connector......................................................................................................................................................31
S/PDIF (Sony/Philips Digital Interface) Connector...................................................................................................................33
AGP (Accelerated Graphi c Port) Expansion Slot.....................................................................................................................35
WOM (Zero Voltage Wake on Modem) Connector...................................................................................................................36
WOM by External BOX Modem...............................................................................................................................................37
WOM by Internal Modem Card................................................................................................................................................38
WOL (Wake on LAN)...............................................................................................................................................................39
CNR (Communication and Network Riser) Expansion Slot......................................................................................................41
PC99 Color Coded Back Panel ...............................................................................................................................................42
Support Six USB Connectors..................................................................................................................................................43
CD Audio Connector................................................................................................................................................................45
Front Audio Connector ............................................................................................................................................................48
Battery-less and Long Life Design........................................................................................................................................... 49
Pure Aluminum Heatsink.........................................................................................................................................................55
Driver and Utility.................................................................................................................................................................. 56
Auto-run Menu from Bonus CD Disc........................................................................................................................................ 57
Installing Si S AGP Dr ive r.........................................................................................................................................................59
ACPI Suspend to Hard Drive...................................................................................................................................................61
ACPI Suspend to RAM (STR)..................................................................................................................................................65
AWARD BIOS ....................................................................................................................................................................... 67
About BIOS Function Description….........................................................................................................................................68
How To Use Award™ BIOS Setup Program ............................................................................................................................69
How To Enter BIOS Setup.......................................................................................................................................................71
BIOS Upgrade under Windows environment...........................................................................................................................72
VGA Card & Hard Disk............................................................................................................................................................75
AMR (Audio/Modem Riser)......................................................................................................................................................77
APM (Advanced Power Management)..................................................................................................................................... 77
ATA (AT Attachment) ...............................................................................................................................................................77
Bus Master IDE (DMA mode)..................................................................................................................................................78
CNR (Communication and Networking Riser)..........................................................................................................................78
CODEC (Coding and Decoding)..............................................................................................................................................79
DDR (Double Data Rated) SDRAM......................................................................................................................................... 79
DIMM (Dual In Line Memory Module)......................................................................................................................................79
ECC (Error Checking and Correction) .....................................................................................................................................80
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EDO (Extended Data Output) Memory....................................................................................................................................80
EEPROM (Electr o n ic Erasable Programmable ROM)..............................................................................................................80
FCC DoC (Declaration of Conformity).....................................................................................................................................81
FSB (Front Side Bus) Clock .................................................................................................................................................... 82
2
I
C Bus....................................................................................................................................................................................82
PDF Format.............................................................................................................................................................................84
PnP (Plug and Play) ................................................................................................................................................................84
POST (Power-On Self Test).....................................................................................................................................................84
SIMM (Single In Line Memory Module)....................................................................................................................................85
SPD (Serial Presence Detect).................................................................................................................................................86
USB (Universal Serial Bus) ..................................................................................................................................................... 87
ZIP file.....................................................................................................................................................................................87
How to Contact Us............................................................................................................................................................... 96
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 are trademarks of Intel Corporat i on.
Microsoft, Windows, and Windows logo are either registered trademark s or t rademarks of Microsoft Corporation in t he 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 r evis e
this publication and to make reasonable changes. AOpen ass umes 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 cop yright 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
This Online Manual will introduce to the user how this product is installed. All useful information will be described in lat er chapters. Please
keep this manual carefully for future upgrades or system configuration changes. This Online Manual is saved in PDF format
recommend using Adobe Acrobat Reader 4.0 for online viewing, it is included in Bonus CD disc
web site.
Although this Online Manual is optimized for screen viewing, it is still capable for hardcopy printi ng, you can print it by A 4 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.
, we
or you can get free download from Adobe
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OOvveerrvviieeww
Thank you for choosing AOpen AK75 motherboard. The AK75 is AMD® Socket 462 motherboard (M/B) based on the ATX form factor
featuring the SIS 745 chi pset
Athlon™ XP & Athlon™ & Duron™ processor with 200/266MHz EV6
supports AGP 1X/2X/4X mode and pipelined spilt-transaction long burst transfer up t o 1056MB/s ec. With hi gh bandwidth 200/266MB/ s 8-bit
Multi-threaded I/O Link Host Controller, DDR266(PC2100)
maximum memory size can be up to 3GB. The onboard IDE controller supports Ultra DMA
100MB/s. Further flexibility can be achieved by taking advantage of the Communication and Network Riser (CNR)
audio, modem, and/or LAN configuration on a single baseboard design. Besides, the
AK75 has an AC97
and magic surround stereo sound to let people enjoy working
with it. Now, let’s enjoy all features from AOpen AK75
motherboard.
. As high performance chipset built in the M/B, the AK 75 motherboard can support AMD® Socket 462 series
system bus. In the AGP performance, it has one AGP slot and
and DDR333(PC2700)DDR SDRAM can be applied to the AK75 and the
33/66/100 mode and the transfer rate up to
card opt ion th at allows
CODEC chipset onboard providing high performance
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CPU
Supports AMD® Socket 462 series CPU with both 200MHz and 266MHz EV6 Bus designed for Socket 462 technology.
Athlon: 600MHz~1.4GHz
Duron: 600MHz~1.2GHz
AthlonXP: 1500+(1.3GHz)~2000+(1.667GHz)
Chipset
The motherboard is equipped with SIS 745 chipset. SIS 745 chipset consists of host interface Controller and integrated high performance
DDR SDRAM
Masters Including IDE, USB, Audio, and Modem Controllers, which can strongly enhance the system performance.
Host system controller, which provide Dedicated High-Speed Data Paths connecting North-Bridge and Each South-B ridge
Expansion Slots
Including six 32-bit/33MHz PCI, one CNR and one AGP 1x2x4X slots. The PCI local bus throughput can be up to 132MB/s. The
Communication & Nectworking Riser (CNR)
Graphics Port (AGP) specification provides a new level of video display sophistication and speed. The AGP video cards support data
transfer rate up to 1056MB/s. AK75 motherboard includes one AGP expansion slot for a bus mastering AGP graphic card. For AD and SBA
signaling, AK75 motherboard can support 1X/2X/4X mode. Of six PCI slots provided, AK75 supports all six master PCI slots with arbitration
and decoding for all integrated functions and LPC bus.
slot provided from AK75 can support CNR interface for a Modem/Audio card. The Accelerated
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Memory
With SIS 745 chipset, the AK 75 can support Doubl e-Data-Rate (DDR) SDRAM. The DDR SDRAM interface allows zero wait state bursting
between the SDRAM and the data buffers at 33/66/100MHz. The six banks of DDR SDRAM can be composed of an arbitrary mixture of
16M/64M/128M/256M/512Mx1GB DDR SDRAM and maximum up to 3 GB.
Ultra DMA 33/66/100 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 33/66/100, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices.
On-board AC’97 Sound
AK75 uses the onboard AC'97 CODEC sound chip. This on-board audio includes a complete audio recording and playback system.
Six USB Connectors
Provides three ports, six USB c onnectors for USB interface devices, such as mouse, keyboard, modem, scanner, etc.
1MHz Stepping Frequency Adjustment
Provides “1MHz Stepping Frequency Adjustment” function in the BIOS. This magic function al lows you adjust CPU FSB frequency from
100~200 by 1MHz stepping, and lets your system can get maximum performance.
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Watch Dog Timer
Includes AOpen “Watch Dog Timer” function that can auto-reset s ystem in 4.8 seconds when you fail to system overclocking.
Power Management/Plug and Play
Supports the power management function that confirms to the power-saving standards of the U.S. Environm ental Protection Agency (EPA)
Energy Star program. It also offers Plug-and-Play
user-friendlier.
, which helps save users from configuration problems, thus making the system much
Hardware Monitoring Management
Supports CPU or system fans status, temperature and voltage monitoring and alert, through the on-board hardware monitor module.
Enhanced ACPI
Fully implement the ACPI standard for Windows® 98/ME/2000 series compatibility, and supports Soft-Off, STR (Suspend to RAM, S3), STD
(Suspend to Disk, S4) features.
Super Multi-I/O
Provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP capabilities. UART can also be directed
from COM1 to the Infrared Module for the wireless connections.
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 98)
11. Installing Driver and Utility
14
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Front Audio Connecto
S/PDIF Connecto
32-bit PCI Expansion Slot x6
CD-IN
AC’97 CODEC
MODEM-CN
AUX-IN
CNR Expansion Slot
WOL (Wake on LAN)
WOM (Wake on Modem)
nd
& 3rdUSB Connecto
JP14 CMOS Clear Jumpe
Case Open Connecto
Connecto
Connecto
IrDA Connecto
2Mbit Programmable
Front Panel Connecto
ATA/33/66/100
IDE Connector x2
FAN3 Connecto
Motherboard Map
PC99 Colored Back Panel
Resettable Fuse
JP28 Wakeup on Keyboard/Mouse
TX Power Connector
FAN2 Connector
2200μF Low ESR Capacitors
GP 4x Expansion Slot
462-pin CPU Socket with Voltage and
Frequency Auto-Detection that supports
MD AthlonTM / DuronTM / and AthlonTMXP
SW1 CPU Ratio Select Switch
SIS 745 Chipset
CPU FAN connector
184-pin DIMM supports DDR SDRAM
DDR333 (DIMMx2 Max. to 2GB)
DDR266 (DIMMx3 Max. to 3GB)
JP21 FSB Select Jumper
FDD Connector
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BBlloocckk DDiiaaggrraamm
AthlonXP/Athlon/Duron
Socket 462
AMD
CPU
AGP 1X/2X/4X Slot
Floppy Disk Drive x2
200/266MHz
System Bus
USB
Connector x6
DDR333 (DIMMx2,
Max. to 2GB)
DDR266 (DIMMx3,
Max. to 3GB)
DIMM Socket x3
SIS 745
1stUSB Port
2ndUSB Port
3rdUSB Port
PCI Bus
33/66100
2Mbit
Flash EEPROM
Winbond
W83697
32-bit PCI Slot x6
ATA
Primary
Channel
Secondary
Channel
RealTek
ALC202A
AC97
CODEC
AC Link
Parallel Port
Serial Port x2
IDE Drive x4
CNR Slot
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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
procedure requiring ESD protection.
When you read this online manual and start to assemble your com puter system, you may f ind some of functi ons are called “Optional”, and
some are called “Upgrade Optional”. Though all AOpen motherboards include m any amazing and powerful features, in some situations,
these powerful features are not used to every user. Hence, we changed some key features as “Optional” for you to choose. Some optional
functions that can be upgraded by users, we call them “Upgrade Optional”. As for those optional functions that can’t be upgraded by
ourselves, we call them “Optional”. If needed, you can contact our local distributors or resellers for purchasing “Upgrade Optional”
components, and again you can visit AOpen official web site: www.aopen.com
for more detail information.
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JJPP1144 CClleeaarr CCMMOOSS DDaattaa
You can clear CMOS to restore system default setting. To clear the CMOS, follow the procedure below.
1. Turn off the system and unplug the AC power.
2. Remove ATX power cable from connector PWR2.
3. Locate JP14 and short pins 2-3 for a few seconds.
4. Return JP14 to its normal setting by shorting pin 1 & pin 2.
5. Connect ATX power cable back to connector PWR2.
Pin 1
1
Normal Operation
(default)
1
Clear CMOS
Tip: When should I Clear CMOS?
1. Boot fail because of overclocking…
2. Forget password…
3. Troubleshooting…
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This motherboard supports AMD® Athlon and Duron Socket 462 series CPU. Be careful of CPU orientation when you plug it into CPU
socket.
1. Pull up the CPU socket lever and
up to 90-degree angle.
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.
CPU socket
Lever
Note: These pictures are for example only, it may not exactly be the same motherboard.
CPU pin 1 and
cut edge
Black dot and
cut edge
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3. Press down the CPU socket lever and finish CPU
installation.
Note: This picture is for example only, it may not exactly be the same motherboard.
CPU cut edge
Note: If you do not match the CPU
socket Pin 1 and CPU cut edge well, it
may damage the CPU.
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This jumper is used to specify FSB clock. Generally speaking, if you are not overclock ers, we recommend you to set it to the default setting.
Additionally, this motherboard also provides “1MHz Stepping Adjustment” feature for overclockers to adjust CPU FSB frequency via BIOS
setup program. Based on the CPU type, the adjustment range has two levels: 100~123 (FSB=100, such as Athlon 800), 124~200
(FSB=133, such as Athlon 1000) MHz for your choosing. You may also choose a specific FSB frequency ranging from 100~124 (say, 105,
110, 115 for example) and 133~166 with reference to a f requency table in BI OS setup program. If you fix the CPU FS B frequency b y JP21,
the “1MHz Stepping Adjustment” range will be changed and following your JP21 setting.
Plug in the CPU fan cable to the 3-pin CPU FAN connector. If you have chassis fan, you can also plug it on System FAN (FAN2)or AUX
FAN (FAN3)connector.
GND
+12V
SENSOR
FAN3 Connector
CPU Fan Connector
Note: Some CPU fans do not have
sensor pin, so that cannot support
hardware monitoring function.
FAN2 Connector
GND
+12V
SENSOR
GND
+12V
SENSOR
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DDIIMMMM SSoocckkeettss
This motherboard has three 184-pin DDR DIMM sockets that allow you to install PC2100 (DIMMx3, Max. to 3GB) or PC2700 (DI MMx2,
Max. to 2GB). Both ECC and Non-ECC DDR SDRAM are supported, but you can’t install them both on DIMM. Otherwise, it will cause
serious damage on memory sockets or SDRAM module.
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.
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.
3. Repeat step 2 to finish additional DIMM modules installation.
Tab
40 pins52 pins
Note: The tabs of the DIMM slot
will close-up to hold the DIMM in
place when the DIMM touches the
slot’s bottom.
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FFrroonntt PPaanneell CCoonnnneeccttoorr
Pin 1
Attach the power LED, Keylock, speaker, power and reset switch connectors to th
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 connecto
from the housing front panel. Plug this connector to the soft-power switch connecto
marked SPWR.
Suspend Type ACP I LED
Power on Suspend (S2) or Suspend to RAM (S3) Fl ashing for every second