AOpen AX45F8XMAX User Manual
AAXX4455FF--88XX MMaaxx OOnnlliinnee MMaannuuaall
AX45F-8X Max
DOC. NO.: AX45F8XMAX-OL-E0307A
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WWhhaatt’’ss iinn tthhiiss mmaannuuaall
AX45F-8X Max .............................................................................................................................................1
What’s in this manual .................................................................................................................................................................... 2
You Must Notice ............................................................................................................................................................................ 8
Before You Start ............................................................................................................................................................................ 9
Overview ..................................................................................................................................................................................... 10
Feature Highlight ......................................................................................................................................................................... 11
Quick Installation Procedure ....................................................................................................................................................... 15
Motherboard Map ........................................................................................................................................................................ 16
Block Diagram ............................................................................................................................................................................. 17
Hardware Installation ............................................................................................................................ 18
About “User Upgrade Optional” and “Manufacture Upgrade Optional”… ................................................................................... 19
EzColor........................................................................................................................................................................................ 20
CPU Installation........................................................................................................................................................................... 22
Hyper Threading Technology ...................................................................................................................................................... 25
CPU Jumper-less Design ............................................................................................................................................................ 27
CPU Over-current Protection ...................................................................................................................................................... 28
AOpen “Watch Dog ABS”............................................................................................................................................................ 29
CPU Core Voltage Auto Detectable............................................................................................................................................. 31
CPU and System Fan Connector (with H/W Monitoring) ............................................................................................................ 32
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DIMM Sockets ............................................................................................................................................................................. 34
Front Panel Connector ................................................................................................................................................................ 36
ATX Power Connector................................................................................................................................................................. 37
AC Power Auto Recovery............................................................................................................................................................ 37
IDE and Floppy Connector .......................................................................................................................................................... 38
ATA133 Supported ...................................................................................................................................................................... 40
Serial ATA Supported .................................................................................................................................................................. 41
IrDA Connector............................................................................................................................................................................ 45
Support AGP 8X (Accelerated Graphic Port) Expansion Slot ..................................................................................................... 46
AGP Protection Technology and AGP LED ................................................................................................................................. 47
Wake On Modem / Wake On LAN / Wake On PCI Card............................................................................................................. 48
Support Gigabit LAN Chip onboard............................................................................................................................................. 49
Support USB 2.0 Ports ................................................................................................................................................................ 50
IEEE 1394 Connectors................................................................................................................................................................ 51
Colored Back Panel..................................................................................................................................................................... 52
S/PDIF (Sony/Philips Digital Interface) Connector...................................................................................................................... 53
Super 5.1 Channel Audio Effect .................................................................................................................................................. 54
Front Audio Connector ................................................................................................................................................................ 55
Dr. LED Connector (User Upgrade Optional).............................................................................................................................. 56
Case Open Connector................................................................................................................................................................. 58
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CD Audio Connector.................................................................................................................................................................... 59
AUX-IN Connector....................................................................................................................................................................... 60
Game Port Bracket Supported .................................................................................................................................................... 61
JP2 Speaker Output Jumper ....................................................................................................................................................... 62
JP14 Clear CMOS Data .............................................................................................................................................................. 63
JP15/JP16 Dr. Voice II Language Select Jumpers...................................................................................................................... 64
JP24 / JP25 BIOS Rescue Jumper ............................................................................................................................................. 65
JP28 Keyboard/Mouse Wake-up Jumper.................................................................................................................................... 66
STBY LED ................................................................................................................................................................................... 67
Enlarged Aluminum Heatsink ...................................................................................................................................................... 68
Resetable Fuse ........................................................................................................................................................................... 69
3300µF Low ESR Capacitor........................................................................................................................................................ 70
EzClock ....................................................................................................................................................................................... 72
AOConfig Utility ........................................................................................................................................................................... 76
Phoenix-AWARD BIOS ............................................................................................................................ 78
How To Use Phoenix-Award™ BIOS Setup Program ................................................................................................................. 79
How To Enter BIOS Setup........................................................................................................................................................... 79
BIOS Upgrade under Windows environment .............................................................................................................................. 81
WinBIOS Utility............................................................................................................................................................................ 83
Vivid BIOS technology................................................................................................................................................................. 85
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Driver and Utility....................................................................................................................................86
Auto-run Menu from Bonus CD ................................................................................................................................................... 86
Installing AGP Driver ................................................................................................................................................................... 87
Installing Onboard Sound Driver ................................................................................................................................................. 88
Installing IDE Driver..................................................................................................................................................................... 89
Installing LAN Driver in Win98SE/ME/2000/XP........................................................................................................................... 90
Installing Serial ATA Driver in Win98SE/ME/NT4.0/2000/XP .................................................................................................... 107
Installing USB 2.0 Driver ........................................................................................................................................................... 119
Glossary ...............................................................................................................................................120
AC97 CODEC ........................................................................................................................................................................... 120
ACPI (Advanced Configuration & Power Interface)................................................................................................................... 120
ACR (Advanced Communication Riser) .................................................................................................................................... 120
AGP (Accelerated Graphic Port) ............................................................................................................................................... 121
AMR (Audio/Modem Riser) ....................................................................................................................................................... 121
ATA (AT Attachment) ................................................................................................................................................................. 121
BIOS (Basic Input/Output System)............................................................................................................................................ 122
Bluetooth ................................................................................................................................................................................... 122
CNR (Communication and Networking Riser)........................................................................................................................... 123
DDR (Double Data Rate) RAM.................................................................................................................................................. 123
ECC (Error Checking and Correction)....................................................................................................................................... 123
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EEPROM (Electronic Erasable Programmable ROM) .............................................................................................................. 123
EPROM (Erasable Programmable ROM).................................................................................................................................. 124
EV6 Bus .................................................................................................................................................................................... 124
FCC DoC (Declaration of Conformity)....................................................................................................................................... 124
FC-PGA (Flip Chip-Pin Grid Array)............................................................................................................................................ 124
FC-PGA2 (Flip Chip-Pin Grid Array).......................................................................................................................................... 124
Flash ROM ................................................................................................................................................................................ 125
Hyper Threading........................................................................................................................................................................ 125
IEEE 1394 ................................................................................................................................................................................. 125
Parity Bit .................................................................................................................................................................................... 126
PCI (Peripheral Component Interface) Bus............................................................................................................................... 126
PDF Format............................................................................................................................................................................... 126
PnP (Plug and Play) .................................................................................................................................................................. 126
POST (Power-On Self Test) ...................................................................................................................................................... 127
PSB (Processor System Bus) Clock ......................................................................................................................................... 127
RDRAM (Rambus Dynamic Random Access Memory) ............................................................................................................ 127
RIMM (Rambus Inline Memory Module).................................................................................................................................... 127
SDRAM (Synchronous DRAM) ................................................................................................................................................. 127
SATA (Serial ATA)...................................................................................................................................................................... 128
SMBus (System Management Bus) .......................................................................................................................................... 128
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SPD (Serial Presence Detect)................................................................................................................................................... 128
USB 2.0 (Universal Serial Bus) ................................................................................................................................................. 128
VCM (Virtual Channel Memory) ................................................................................................................................................ 129
Wireless LAN – 802.11b............................................................................................................................................................ 129
ZIP file ....................................................................................................................................................................................... 129
Troubleshooting ................................................................................................................................... 130
Technical Support ................................................................................................................................134
Product Registration............................................................................................................................ 138
How to Contact Us............................................................................................................................... 139
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YYoouu MMuusstt NNoottiiccee
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 and 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 an
without prior written permission from AOpen Corporation.
Copyright
©
1996-2003, AOpen Inc. All Rights Reserved.
y form or by any means, or stored in a database or retrieval system
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BBeeffoorree YYoouu SSttaarrtt
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
recommend using Adobe Acrobat Reader 5.0 for online viewing, it is included in Bonus CD 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.
, we
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OOvveerrvviieeww
Thank you for choosing AOpen AX45F-8X Max motherboard. AX45F-8X Max is Intel® Socket 478 motherboard (M/B) based on the ATX
form factor featuring the SIS 648FX chipset
Socket 478 Pentium
Technology which brings additional intelligence to system. In the AGP performance, it has one AGP slot and supports AGP 8X mode
pipelined spilt-transaction long burst transfer up to 2112MB/sec. According to different customer’s requirements, AX45F-8X Max
supports DDR 400/333/266 RAM up to 3GB maximum. The onboard
IDE controller supports Ultra DMA 66/100/133 mode and Serial ATA
150 MB/s. There are 6 PCI slots provided on this board and two
IEEE1394
A total of 4 USB 2.0
board give you the best use of all USB devices at the fancy speed up
to 480Mbps. More than that, on the strength of Realtek Gigabit LAN
controller on board, which is a highly-integrated Platform LAN Connect
device, it provides 10/100/1000 Mbps Ethernet for office and home use.
Besides, AX45F-8X Max has a S/PDIF connector and an AC97
chipset onboard, providing high performance and magic
CODEC
surround stereo sound to let people enjoy working with it. Now, let’s
enjoy all features from AOpen AX45F-8X Max motherboard.
®
4 1.6GHz~3.20GHz and 400/533/800 MHz Front Side Bus (FSB) clock. It also supports Intel Hyper-Threading
connectors which provide data transfer rate up to 400Mb/s.
ports on the back panel and one connector on
. As high performance chipset built in the M/B, AX45F-8X Max motherboard supports Intel®
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AAXX4455FF--88XX MMaaxx OOnnlliinnee MMaannuuaall
FFeeaattuurree HHiigghhlliigghhtt
CPU
Supports Intel® Socket 478 Pentium® 4 (Northwood) 1.6GHz~3.20GHz+ with 400/533/800 MHz Front Side Bus (FSB) designed for
S
ocket 478 technology. The AX45F-8X Max motherboard supports Intel Hyper-Threading Technology.
Chipset
The motherboard is equipped with SIS 648FX chipset. The SIS 648FX Host & Memory & AGP Controller integrates a high performance
host interface for Intel Pentium 4 processor, a high performance memory controller, an AGP interface and SiS MuTIOL 1G Technology
connecting with SiS963L MuTIOL 1G Media IO. The host interface plays the role of processor transactions’ dispatcher. It dispatches
transactions to Memory, I/O interface and AGP bus. Transactions to different destinations can be dispatched concurrently in order to
maximum pipeline efficiency. The Memory con
CKE# pins asserted in ACPI S3 state in which only AUX source deliver power. The AGP interface supports external AGP slot with AGP
4X/8X capability and F
ast Write Transactions.
troller supports DDR 400/333/266 RAM and the Suspend to RAM function by retaining the
Expansion Slots
Including six 32-bit/33MHz PCI and one AGP 4X/8X slots. The PCI local bus throughput can be up to 132MB/s. All six PCI slots are
master PCI slots with arbitration and decoding for all integrated functions and LPC bus. The Accelerated Graphics Port (AGP)
specificatio
n provides a new level of video display sophistication and speed. And the data transfer rate can be up to 2112MB/s.
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Memory
Provides three 184-pin DDR DIMM sockets that support DDR 400/333/266 composed of an arbitrary mixture of 64, 128, 256, 512 MB or
1GB RAM up to 3 GB maximum.
Hyper-Threading Technology
Support Hyper-Thread
can be managed
ing Technology which brings additional intelligence to systems so that multiple tasks received from the processor
and prioritized more effectively.
Watch Dog ABS
Includes AOpen “Watch Dog ABS” function that can auto-reset system in 4.8 seconds when you fail the system overclocking.
1MHz Stepping Frequency Adjustment
Provides “1MH frequency
from 100~248MHz by 1MHz stepping adjustment, and helps your system get maximum performance.
z Stepping Frequency Adjustment” function in the BIOS. This magic function allows you to adjust CPU FSB
LAN Port
On the strength of Realtek Gigabit LAN controlle
10/100/1000 Mbps Ethernet for office and home use.
r on board, which is a highly-integrated Platform LAN Connect device, it provides
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Ultra DMA 66/100/133 Bus Mater IDE
Comes with an on-board PCI Bus Master IDE controller with three connectors that support six IDE devices in two channels, supports
66/100/133, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices.
Ultra DM
A
On-board AC’97
AX45F-8X Max uses RealTek ALC650 AC97 sound chip. This on-board audio includes a complete audio recording and playback
system.
Sound
Six USB 2.0 Ports
Provides four ports on the back panel and one connector on board to connect USB 2.0 interface devices, such as mouse, keyboard,
modem, scanner, etc.
AGP Protection Technology
With AGP Protection Technology
c
hipsets from being burnt out.
implemented, this motherboard will automatically detect the voltage of AGP card and prevent your
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Dr. Voice II
The Dr. Voice II can identify what kind of pro l
German four kinds language versions.
b ems had occurred in the operating system. It provides English, Chinese, Japanese and
S/PDIF Connectors
S/PDIF (Sony/Philips Digital Inte
and allows you to enjoy digital audio instead of analog audio.
rface) is the newest audio transfer file format, which provides impressive quality through optical fiber
On-boa
Comes with two onboard IEEE 1394 (IEEE-139
1394 devices, such as digital camera or other IEEE 1394 storage devices.
rd IEEE 1394 Connectors
4a-2000) fully compliant cable ports at 100/200/400 Mbs/sec for you to connect IEEE
Power Management/Plug and Play
Supports the power management function that confirms to the p S. Environmental Protection Agency
(EPA) Energy Star program. It also offers Plug-and-Play
much user-friendlier.
r ment
HaSudware Monitoring Manage
pp mperature and voltage monitoring and alert, through the on-board hardware monitor module.
orts CPU or system fans status, te
, which helps save users from configuration problems, thus making the system
ower-saving standards of the U.
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Q
u
Q
u
iicckk IInnssttaallllaattiioonn P
This p to install your system. Follow each step accordingly.
age gives you a quick procedure on how
1.
2. Installing System Memory (DIMM)
3. Connecting Front Panel 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
alling CPU
Inst and Fan
. Connecting IDE and Floppy Cable4
. Connecting ATX Power Cable5
P
rroocceedduurree
15
per
r
r
r
per
r
r
r
r
AAXX4455FF--88XX MMaaxx
OOnnlliinnee MMaannuuaall
Motherboard Map
Realtek Gigabit PCI LAN Chip
32-bit PCI Expansion Slots x6
Game Port Connector
Front Audio Connector
CD-IN Connecto
ALC650 AC’97 CODEC
AUX-IN Connecto
SmartEARConnecto
S/PDIF Connecto
IrDA Connecto
US 2.0 ConnectorB
ie-hard BIOS IID
JP24/JP25 BIOS Rescue Jumper
Serial ATA Connectors x2
Languag Select Jumper
IEEE
JP2 Speaker output Jumper
JP14 CMOS Clear Jum
JP15/16 Dr. Voice II
e
1394 Connectors x2
SYS-FAN3 Connecto
Front Panel Connector
Case Open Connector
Dr. LED Connecto
16
Resetable Fuse
PC99 Colored Back Panel
JP28 Keyboard/Mouse Wakeup
Jum
4-pin 12V. ATX Power Connector
3300μF Low ESR Capacitors
SYS-FAN2 Connector
AGP 8x/4x Expansion slot
478-pin CPU socket with Voltage
and Frequency Auto-detection
that supports Intel
1.6~3.20GHz+ CPU
SIS 648FX/963 Chipset
CPU FAN connector
184-pin DIMMx3 sup
266/333/400 RAM
maximum up to 3GB
Power Tempe
Detecting Co ctor
Power Fan 4
FDD Connector
ATA 66/100/13
Connectorsx3
rature
nne
3 IDE
®
entium 4
P
ports DDR
r ATX Power Connecto
®
AAXX4455FF--88XX MMaaxx OOnnlliinnee MMaannuuaall
BBlloocckk DDiiaaggrraamm
Socket 478
Intel Pentium 4
CPU
1stIEEE1394
2ndIEEE 1394
AGP 8X Sl ot
DDR400/333/266 RAM
Up to 3GB
DIMM Socket x3
800/533MHz
System Bus
LAN connect Component
AGERE
FW802C
Floppy Disk Drive x2
SIS 648FX
USB2.0
Ports x6
PCI Bus
Realtek
Gigabit LAN
Chip
1stUSB Port
2ndUSB Port
3rdUSB Port
32-bit PCI Slot x6
Serial ATA x2
150MB/S
ATA
66/100/133
SATA 1
SATA 2
Primary
Channel
Secondary
Channel
Channel
SIS 963
IT8705F
Third
ITE
RealTek
AC97
CODEC
2Mbit Flash EEPROM
Parallel Port
Serial Port x2
IDE Drive x6
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Haarrddwwaarree IInnssttaallllaattiioonn
H
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.
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AAbboouutt ““UUsseerr UUppggrraaddee OOppttiioonnaall”” aanndd ““MMaannuuffaaccttuurree UUppggrraaddee OOppttiioonnaall””……
When you read this online manual and start to assemble your computer system, you may notice that some of the functions are marked
as “User Upgrade Optional” or “Manufacture Upgrade Optional”. Although all of AOpen’s motherboards have included many amazing
and powerful features, sometimes not every user is familiar with these powerful features. As a result of this we define features that can
be upgraded by users as “User Upgrade Optional”. You can upgrade these functions by purchasing additional devices. As for functions
that cannot be upgraded by users, we define them as “Manufacture Upgrade Optional”. If need be, you can contact our local distributors
or resellers to purchase “Manufacture Upgrade Optional” components, and again you are also welcome to visit our official website at
www.aopen.com
for detail information.
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EEzzCCoolloorr
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
Sand: PCI Slot
Flame Red:
Both 4-pin and 12-pin
ATX connector
Electric Blue:
Memory Module
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1
Power Switch
IDE LED
SPEAKER
Note: Colors setting varies on different motherboards, the color setting here applies only to AX45F-8X Max.
ACPI & Power LED
RESET
Claret: Serial ATA connector
Navy Blue: IDE 1 Connector
Black: IDE 2 Connector
Light Yellow: IDE 3 Connector
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CCPPUU IInnssttaallllaattiionn
This motherboard supports Intel® Pentium 4 Socket 478 series CPU (Northwood). 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.
o
2. Locate Pin 1 in the socket and look for mark on the CPU upper interface.
Match Pin 1 and cut edge, then insert the CPU into the socket.
Note ok the same with the motherboard you purchased.
: Those pictures are for example only; they may not lo
CPU socket
Lever
CPU pin 1 and
cut edge
CPU cut edge
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AAXX4455F
Note: This picture is for example only; it may not look the same with the motherboard you purchased.
F
3. Press down the CPU socket lever and finish CPU
installation.
M
--88XX M
aaxx OOnnlliinnee MMaannuuaall
CPU cut edge
Note: If you do not match the CPU
socket Pin 1 and CPU cut edge well, you
may damage the CPU.
Note: This socket supports
Micro-FC-PGA2 package CPU, which is
the latest CPU package developed by
Intel. Other forms of CPU package are
impossible to be fitted in.
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CCPPUU FFaann IInnssttaallllaattiioonn
This motherboard comes with a retention module att CPU socket when shipped, we strongly recommend you to install
Open speci signed CPU Fan as shown below on module for better heat dissipation. Please install the CPU Fan
orrectly as the f ing pictures shown.
1.
Gently put the CPU Fan down on the
retention module with clips aligning correctly
to the four corners.
ollowc
ached on the
on the retentiA al de
Pressing down the four clips with force one by one
2.
on the retention module.
Clip
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HHyyppeerr TThhrreeaaddiinngg TTeecchhnnoollooggyy
What is Hyper-Threading?
Hyper-Threading technology is an innovative design from Intel that enables multi-threaded sof
parallel within each processor resulting in increased utilization of processor execution resource
of ~40% in CPU resource utilization yields higher processing throughput.
t
ware applications to process threads in
s
. As a result, an average improvement
How Hyper-Threading Works
A form of simultaneous multi-threading
technology (SMT), Hyper-Threading
technology allows multiple threads of
software applications to be run
simultaneously on one processor by
duplicating the architectural state on
each processor while the same
processor execution resources is
shared. The figure below represents
how a Hyper-Threading based
processor differentiates a traditional
multiprocessor. The left-hand
configuration shows a traditional
multiprocessor system with two
physical processors. Each processor
has its own independent execution
resources and architectural state. The
right-hand configuration represents an Intel Hyper-Threading technology based processor. You can see that the architectural state for
each processor is duplicated, while the execution resource is shared.
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For multiprocessor-capable software
applications, the Hyper-Threading
based processor is considered two
separate logical processors on which
the software applications can run
without modification. Also, each logical
processor responds to interrupts
independently. The first logical
processor can track one software
thread, while the second logical
processor tracks another software
thread simultaneously. Because the
two threads share the same execution
resources, the second thread can use
resources that would be otherwise idle
if only one thread was executing. This
results in an increased utilization of the
execution resources within each
physical processor.
The figure below represents how
Hyper-Threading saves time when it works. With two logical processors available on every single physical processor, multi-threaded
applications can now take advantage of thread-level parallelism on each physical processor for additional performance. As software
applications continue to be optimized to take greater advantage of processor parallelism, Hyper-Threading technology provides an
additional boost for newer capabilities and the growing needs of today’s users.
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CCPPUU JJuummppeerr--lleessss DDeessiiggn
CPU VID signal and SMbus clock generator provide CPU voltage auto-detection and allows the user to set the CPU frequency through
the BIOS setup, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less designs are
eliminated. There will be no worry of wrong CPU voltage detection.
CPU VID signal
(Automatically generates CPU voltage)
Intel® Socket 478
Power Regulator
n
Pentium 4
CPU voltage
Clock Generator
CPU Freq. Ratio
BIOS
Controlled
Circuit
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CCPPUU OOvveerr--ccuurrrreenntt PPrrootteeccttiioonn
The Over Current Protection is a popular implementation on ATX 3.3V/5V/12V switching power supply. However, the new generation
CPU uses different voltage with a regulator to transfer 12V to CPU voltage (for example, 2.0V), and thus makes 5V over current
protection useless. This motherboard is with switching regulator onboard supporting CPU over-current protection; in conjunction with
3.3V/5V/12V power supply provide the full line over-current protection.
ATX Switching Power Supply
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
cannot guaranty the protection circuit will always work perfectly.
5V (Protected by power supply)
3.3V (Protected by power supply)
12V (Protected by power supply)
Onboard Power Regulator
(Over-Current Protection)
unknown nature reason. AOpen
CPU Core Voltage
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AAOOppeenn ““WWaattcchh DDoogg AABBSS””
to user’s settings stored in the BIOS. If system failed in BIOS POST, the “Watch Dog Timer” 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 a higher system performance without removing the system housing and save the hassle from setting the jumper to clear
CMOS data when system hangs.
AOpen
Watch Dog ABS
Enable/Disable Signal from
AOpen provides a special and useful feature on this motherboard for overclockers. When you
power-on the system, the BIOS will check last system POST
will enable “Watch Dog ABS” function immediately, and set the CPU FSB frequency according
BIOS
BIOS
Reset Signal
Clock Generator
Countdown about
5 seconds if fails
in POST
CPU
status. If it succeeded, the BIOS
CPU ID Signal
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BBaattteerryy--lleessss aanndd LLoonngg LLiiffee DDeessiiggn
t
This Motherboard implements a Flash ROM
CMOS Setup configurations. 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.
and a special circuit that provide you no batter power consumption of current CPU and
ATX Stand-by Power
n
Battery
Flash ROM
(Real Time Clock)
Auto Switch
RTC
00:00:00
CMOS
Auto switch to ATX standby
power as long as AC power line
is plugged. This smart design
increases battery life if you still
plug battery on motherboard.
Backup by EEPROM
30
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