AOpen AX45F4DMAX User Manual
AAXX4455FF--44DD SSeerriieess
OOnnlliinnee MMaannuuaal
AX45F-4D Series
DOC. NO.:AX45F4DMAX-OL-E0309A
l
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WWhhaatt’’ss iinn tthhiiss mmaannuuaall
AX45F-4D Series...................................................................................................................................... 1
What’s in this manual .................................................................................................................................................................... 2
You Must Notice ............................................................................................................................................................................ 8
Before You Start ............................................................................................................................................................................ 9
Overview ..................................................................................................................................................................................... 10
AX45F-4D Series Comparison Table .......................................................................................................................................... 11
Feature Highlight .........................................................................................................................................................................12
Quick Installation Procedure ....................................................................................................................................................... 17
Motherboard Map ........................................................................................................................................................................ 18
Block Diagram ............................................................................................................................................................................. 19
Hardware Installation ........................................................................................................................ 20
About “User Upgrade Optional” and “Manufacture Upgrade Optional”… ................................................................................... 21
EzColor........................................................................................................................................................................................ 22
CPU Installation........................................................................................................................................................................... 24
CPU Fan Installation ................................................................................................................................................................... 26
CPU Over-current Protection ...................................................................................................................................................... 28
AOpen “Watch Dog ABS”............................................................................................................................................................ 30
Full-range Adjustable CPU Core Voltage.................................................................................................................................... 31
CPU and System Fan Connector (with H/W Monitoring) ............................................................................................................ 33
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DIMM Sockets ............................................................................................................................................................................. 34
Maximum the performance of Dual Channel............................................................................................................................... 36
ATX Power Connector................................................................................................................................................................. 37
AC Power Auto Recovery............................................................................................................................................................ 37
IDE and Floppy Connector .......................................................................................................................................................... 38
ATA133 Supported ...................................................................................................................................................................... 40
Serial ATA Supported .................................................................................................................................................................. 41
Connecting Serial ATA Disk......................................................................................................................................................... 42
Support RAID 0 and RAID 1........................................................................................................................................................ 44
Front Panel Connector ................................................................................................................................................................ 45
AGP (Accelerated Graphic Port) 8X Expansion Slot................................................................................................................... 46
AGP Protection Technology and AGP LED ................................................................................................................................. 47
Hercules PCI Slot ........................................................................................................................................................................ 48
IrDA Connector............................................................................................................................................................................ 49
Support LAN onboard (for AX45-4DL, AX45-4DN and AX45F-4D Max)..................................................................................... 50
Support USB 2.0 Ports ................................................................................................................................................................ 51
Color Coded Back Panel ............................................................................................................................................................. 52
S/PDIF (Sony/Philips Digital Interface) Connector...................................................................................................................... 53
Super 5.1 Channel Audio Effect .................................................................................................................................................. 54
Front Audio Connector ................................................................................................................................................................ 55
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Game Port Bracket Supported .................................................................................................................................................... 56
CD Audio Connector.................................................................................................................................................................... 57
AUX-IN Connector....................................................................................................................................................................... 58
Case Open Connector................................................................................................................................................................. 59
STBY LED (Standby LED)........................................................................................................................................................... 60
Fansink on North Bridge.............................................................................................................................................................. 61
Low ESR Capacitor ..................................................................................................................................................................... 62
JP2 Speaker Output Jumper (only for AX45F-4D Max) .............................................................................................................. 63
JP14 Clear CMOS Data .............................................................................................................................................................. 64
JP15/JP16 Dr. Voice II Language Select Jumpers (only for AX45F-4D Max)............................................................................. 65
JP24 / JP25 BIOS Rescue Jumper (only for AX45F-4D Max) .................................................................................................... 66
JP28 Keyboard/Mouse Wake-up Jumper.................................................................................................................................... 67
The noise is gone!! ---- SilentTek................................................................................................................................................. 68
EzClock ....................................................................................................................................................................................... 71
Hyper Threading Technology ...................................................................................................................................................... 75
AOConfig Utility ........................................................................................................................................................................... 77
RAID Introduction ..............................................................................................................................79
What’s RAID?.............................................................................................................................................................................. 79
What are the RAID levels? .......................................................................................................................................................... 80
HDD Capacity of RAID Levels..................................................................................................................................................... 82
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Serial ATA RAID for SiS964......................................................................................................................................................... 83
Phoenix-AWARD BIOS ........................................................................................................................ 85
How to Use Phoenix-Award™ BIOS Setup Program .................................................................................................................. 86
How To Enter BIOS Setup........................................................................................................................................................... 87
BIOS Upgrade under Windows environment .............................................................................................................................. 88
WinBIOS Utility (only for AX45F-4D Max) ................................................................................................................................... 90
Open JukeBox Player (only for AX45F-4D Max)......................................................................................................................... 92
Vivid BIOS technology................................................................................................................................................................. 96
Driver and Utility................................................................................................................................ 97
Auto-run Menu from Bonus CD ................................................................................................................................................... 97
Installing AGP Driver ................................................................................................................................................................... 98
Installing Onboard Sound Driver ................................................................................................................................................. 99
Installing Gigabit LAN Driver (for AX45F-4D Max and AX45F-4DL) ......................................................................................... 100
Installing Realtek 10/100 Mbps LAN Driver in Win98SE/2000/XP (for AX45F-4DN)...............................................................111
Installing IDE Driver................................................................................................................................................................... 115
Installing SiS Serial ATA Raid Driver in Win 2000/XP ............................................................................................................... 116
Installing Promise Serial ATA Driver (only for AX45F-4D Max) ................................................................................................. 117
Installing USB 2.0 Driver ........................................................................................................................................................... 129
Glossary ...........................................................................................................................................130
AC’97 CODEC........................................................................................................................................................................... 130
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ACPI (Advanced Configuration & Power Interface)................................................................................................................... 130
ACR (Advanced Communication Riser) .................................................................................................................................... 130
AGP (Accelerated Graphic Port) ............................................................................................................................................... 131
AMR (Audio/Modem Riser) ....................................................................................................................................................... 131
ATA (AT Attachment) ................................................................................................................................................................. 131
BIOS (Basic Input/Output System)............................................................................................................................................ 132
Bluetooth ................................................................................................................................................................................... 132
CNR (Communication and Networking Riser)........................................................................................................................... 133
DDR (Double Data Rate) SDRAM............................................................................................................................................. 133
ECC (Error Checking and Correction)....................................................................................................................................... 133
EEPROM (Electronic Erasable Programmable ROM) .............................................................................................................. 133
EPROM (Erasable Programmable ROM).................................................................................................................................. 134
EV6 Bus .................................................................................................................................................................................... 134
FCC DoC (Declaration of Conformity)....................................................................................................................................... 134
FC-PGA (Flip Chip-Pin Grid Array)............................................................................................................................................ 134
FC-PGA2 (Flip Chip-Pin Grid Array).......................................................................................................................................... 134
Flash ROM ................................................................................................................................................................................ 135
Hyper Threading........................................................................................................................................................................ 135
IEEE 1394 ................................................................................................................................................................................. 135
Parity Bit .................................................................................................................................................................................... 136
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PCI (Peripheral Component Interface) Bus............................................................................................................................... 136
PDF Format............................................................................................................................................................................... 136
PnP (Plug and Play) .................................................................................................................................................................. 136
POST (Power-On Self Test) ...................................................................................................................................................... 136
PSB (Processor System Bus) Clock ......................................................................................................................................... 137
RDRAM (Rambus Dynamic Random Access Memory) ............................................................................................................ 137
RIMM (Rambus Inline Memory Module).................................................................................................................................... 137
SDRAM (Synchronous DRAM) ................................................................................................................................................. 137
SATA (Serial ATA)...................................................................................................................................................................... 138
SMBus (System Management Bus) .......................................................................................................................................... 138
SPD (Serial Presence Detect)................................................................................................................................................... 138
USB 2.0 (Universal Serial Bus) ................................................................................................................................................. 138
VCM (Virtual Channel Memory) ................................................................................................................................................ 139
Wireless LAN – 802.11b............................................................................................................................................................ 139
ZIP file ....................................................................................................................................................................................... 139
Troubleshooting ............................................................................................................................... 140
Technical Support ............................................................................................................................ 144
Product Registration........................................................................................................................ 148
How to Contact Us........................................................................................................................... 149
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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 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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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, we
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.
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OOvveerrvviieeww
Thank you for choosing AX45F-4D Series. AX45F-4D Series is Intel® Socket 478 motherboard (M/B) based on the ATX form factor
featuring the SiS 655FX/964 chipsets. As high performance chipset built in the M/B, AX45F-4D Series supports Intel
®
Pentium
additional intelligence to systems. In the AGP
spilt-transaction long burst transfer up to 2112MB/sec. According to different customer’s requirements, this M/B supports DDR266
DDR333
mode and Serial ATA
Hercules PCI slot. A total of four USB 2.0
back panel and two headers on the board give you the
best use of all USB devices with the fancy speed up to
480Mbps. More than that, on the strength of integrated
Realtek LAN controller on board, which is a highly
integrated Platform LAN Connect device, it provides
10/100/1000 Mbps Ethernet (for AX45F-4DN, it is 10/100
Mbps) for office and home use. Besides, AX45F-4D
Series has S/PDIF connector and an AC’97 CODEC
Realtek chipset onboard, providing high performance
and magic surround stereo sound to let people enjoy
working with it. Now, let’s enjoy all features from
AX45F-4D Series.
and DDR400 RAM up to 4GB maximum in Dual Channel mode. The onboard IDE controller supports Ultra DMA 66/100/133
®
Socket 478
4 1.6GHz~3.20GHz. It supports 400/533/800MHz Front Side Bus (FSB) clock and Hyper-Threading Technology that brings
performance, it has one AGP slot to support AGP 8X/4X mode and pipelined
150 MB/s (supports RAID 0 and RAID 1 functions). There are 5 PCI slots provided on this board, including one
ports on the
,
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LAN
Diehard
BIOS
Hercules
PCI Slot
Dr. Voice II
AAXX4455FF--44DD SSeerriieess CCoommppaarriissoonn TTaabbllee
Following we list functions of all models. “V” represents those functions that the model equips with and “X” represents functions that
models don’t have. Please always refer to this page to see the functions of your model.
Model
AX45F-4D
AX45F-4DL
AX45F-4DN
AX45F-4D Max
IDE
Slots
SATA
Slots
2 2 X X X X
2 2 10/100/1000 Mbps X X X
2 2 10/100 Mbps X X X
3 4 10/100/1000 Mbps V V V
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FFeeaattuurree HHiigghhlliigghhtt
CPU
Supports Intel® Socket 478 Pentium® 4 1.6GHz~3.20GHz+ with 400/533/800MHz Front Side Bus (FSB) designed for Socket 478
technology. The AX45F-4D Series motherboard supports Intel Hyper-Threading Technology.
Chipset
The motherboard is equipped with SIS 655FX chipset. The SIS 655FX 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 SiS964 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 controller supports DDR 400/333/266 RAM and the Suspend to RAM function by retaining the
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 Fast Write Transactions.
Memory
With SiS 655FX/964 chipset, this motherboard can support dual channel Double-Data-Rate (DDR) SDRAM. The dual channel mode
allows chipsets to get data in 128 bit and zero wait state bursting between the RAM. The data transfer at 266/333/400MHz. The four
slots of DDR SDRAM can be composed of an arbitrary mixture of 64, 128, 256, 512 MB or 1GB DDR SDRAM and maximum up to 4GB.
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Expansion Slots
Including five 32-bit/33MHz PCI and one AGP 8X/4X slots (The PCI 5 is named Hercules which is reserved especially for high
power-consuming PCI cards). The PCI local bus throughput can be up to 132MB/s. Of five PCI slots provided, all of them are master
PCI slots with arbitration and decoding for all integrated functions and LPC bus. The AGP expansion slot is designed for a bus mastering
AGP graphic card. The
The AGP video cards support data transfer rate up to 2112MB/s.
Accelerated Graphics Port (AGP)
specification provides a new level of video display sophistication and speed.
AGP Protection Technology
With AGP Protection Technology implemented, this motherboard will automatically detect the voltage of AGP card and prevent your
chipsets from being burnt out.
Hyper-Threading Technology
Support Hyper-Threading Technology which brings additional intelligence to systems so that multiple tasks received from the processor
can be managed 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 CPU Frequency Adjustment
Provides “1MHz Stepping CPU Frequency Adjustment” function in the BIOS. This magic function allows you to adjust CPU FSB
frequency from 100~248MHz by 1MHz stepping adjustment, and helps your system get maximum performance.
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LAN Port (for AX45F-4DL, AX45F-4DN and AX45F-4D Max)
On the strength of Gigabit LAN controller (AX45F-4D Max and AX45F-4DL) or Realtek 10/100 Mbps LAN controller (AX45F-4DN) on
board, this motherboard provides 10/100/1000 Mbps Ethernet (for AX45F-4DN, it is 10/100 Mbps) for office and home use. For
AX45F-4D motherboard, it does not support LAN onboard.
Ultra DMA 66/100/133 Bus IDE
Comes with an on-board PCI Bus Master IDE controller with two connectors that support four IDE devices in two channels, supports
Ultra DMA 66/100/133, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices. For AX45F-4D Max,
there are three connectors and support six IDE devices in three channels.
Serial ATA
Integrated in SiS 964 chipset that contains independent DMA operation on two ports, the SATA controllers are completely software
transparent with the IDE interface, while providing a lower pin count and higher performance and aiming to provide you an even faster
transfer rate of 150 Mbytes/second. For AX45F-4D Max motherboards, there are 4 SATA connectors onboard including the other two
ports provided by an extra Promise SATA controller.
On-board AC’97 Sound
AX45F-4D Series uses RealTek AC’97 CODEC Realtek ALC658 chip. This on-board audio includes a complete audio recording and
playback system.
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Eight USB 2.0 Ports
Provides four ports on the back panel and two USB 2.0 headers on the board, providing a total of eight USB 2.0 interface to connect
devices such as mouse, keyboard, modem, scanner, etc.
S/PDIF Connector
S/PDIF (Sony/Philips Digital Interface) is the newest audio transfer file format, which provides impressive quality through optical fiber
and allows you to enjoy digital audio instead of analog audio.
Power Management/Plug and Play
Supports the power management function which confirms to the power-saving standards of the U.S. Environmental Protection Agency
(EPA) Energy Star program. It also offers
much user-friendlier.
Plug-and-Play
, which helps save users from configuration problems, thus making the system
Hardware Monitoring Management
Supports CPU or system fans status, temperature and voltage monitoring and alert, through the on-board hardware monitor module.
SilentTek
Combines “Hardware-Status Monitoring”, “Overheat Warning” and “Fan Speed Control” with user-friendly interfaces to provide a perfect
balance among noises, system performance and stability.
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Enhanced ACPI
Fully implement the ACPI standard for Windows® 98/ME/2000/XP series compatibility, and supports Soft-Off, STR (Suspend to RAM,
S3), STD (Suspend to Disk, S4) and S5 features.
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QQuuiicckk IInnssttaallllaattiioonn PPrroocceedduurree
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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(for AX45F-4D Max and AX45F-4DL)
supports high power-consuming
Realtek Gigabit LAN chip
Realtek 10/100 Mbps LAN chip
Onboard AC’97 CODEC
Language Selection Jumper
32-bit PCI Expansion Slotsx5
(Slot 5: Hercules PCI card that
only for AX45F-4D Max)
USB 2.0 Connectors x2
(for AX45F-4D, AX45F-4DL and
JP14 CMOS Clear Jumper
JP24/JP25 BIOS Rescu e Jumpe
ATA 6 6/1 00/133 IDE Connectorsx3
(for AX45F-4D, AX45F-4DL and
AX45F-4DN, Connectors x2)
(for AX45F-4DN)
CD-IN Connector
AUX-IN Connector
S/PDIF Connector
JP2 Speaker output Jumper
JP15/JP16 Dr.Voice II
(only for AX45F-4D Max)
Front Audio Connector
PCI cards,
Case Open Connector
Die-hard BIOS x2
(only for AX45F-4D Max)
SATA Ports x 4
AX45F-4DN, Ports x2)
Game Port Connector
(only for AX45F-4D Max)
IrDA Connector
SYSFAN2 Connector
Front Panel Connector
FDD Connector
Motherboard Map
Colored Back Panel
JP28 Keyboard/Mouse
Wakeup Jumper
Connector SYSFAN1
Low ESR Capacitors
4-pin 12V. ATX Power Connector
AGP Protection LED
AGP 8X Expansion Slot
supports 8X AGP Cards (2.1GB/s)
478-pin CPU socket with Voltage and
Frequency Auto-detection that supports
Intel® Pentium® 4 1.6~3.20GHz+ CPU
SiS 655FX/964 Chipset that
support 400/533/800MHz FSB,
DDR 266/333/400 and AGP 8X
CPUFAN Connector
184-pin DIMMsx4 support
Dual Channel DDR400/333/266
Max. To 4 GB
ATX Power Connector
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BBlloocckk DDiiaaggrraamm
Socket 478
Intel Pentium 4
CPU
AGP 8X Slot
LAN connect Component
400/533/800MHz
DDR400/333/266 Dual Channel
RAM Up to 4GB
DIMM Sockets x4
System Bus
AGP bus
655FX
chipset
Gigabit LAN Chip
(AX45F-4D Ma x
and AX45F-4DL)
Realtek
10/100Mbps
(AX45F-4DN)
USB Ports x8
Floppy Disk Drive
SiS
PCI Bus
Serial ATA Ports x4
USB Port
USB Port
USB Port
USB Port
32-bit PCI Sl ots x5
150MB/s
ATA
66/100/133
Hercules PCI Slot
SATA 1
SATA 2
SATA 3
SATA 4
Primary
Channel
Secondary
Channel
Third
Channel
SiS
964
For AX45F-4D, AX45F-4DL
and AX45F-4DN, Ports x2
For AX45F-4D, AX45F-4DL
RealTek
AC97
CODEC
only AX45F-4D Max supports
Serial Ports x2
and AX45F-4DN,
Connectors x2
Die-hard BIOS
4Mbit Flash EEPROM
Parallel Port
IDE Drives x6
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HHaarrddwwaarree IInnssttaallllaattiioonn
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
english.aopen.com.tw
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!
Sand: PCI Slot
Navy Blue:
PCI Slot 5
Electric Blue
and Navy Blue:
Memory Module
Sky Blue: AGP Slot
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Flame Red:
Both 4-pin and 12-pin
ATX connector
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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-4D Series Motherboards.
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. 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: Those pictures are for example only; they may not look the same with the motherboard you purchased.
CPU socket
Lever
CPU pin 1 and
cut edge
CPU cut edge
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AAXX4455F
3. Press down the CPU socket lever and finish CPU
installation.
Note: This picture is for example only; it may not look the same with the motherboard you purchased.
F
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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 attached on the CPU socket when shipped, we strongly recommend you to install
AOpen special designed CPU Fan as shown below on the retention module for better heat dissipation. Please install the CPU Fan
correctly as the following pictures shown.
1. Gently put the CPU Fan down on the
retention module with clips aligning correctly
to the four corners.
Note: The picture above may look different from the product you purchased.
2. Pressing down the four clips with force one by one
on the retention module.
Clip
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CCPPUU JJuummppeerr--lleessss DDeessiiggnn
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
Pentium 4
CPU voltage
Clock Generator
CPU Freq. Ratio
BIOS
Controlled
Circuit
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CCPPUU OOvveerr--ccuurrrreenntt PProotteeccttiioonn
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, 1.475V), 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 unknown nature reason. AOpen
cannot guaranty the protection circuit will always work perfectly.
r
5V (Protected by power supply)
3.3V (Protected by power supply)
12V (Protected by power supply)
Onboard Power Regulator
(Over-Current Protection)
CPU Core Voltage
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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
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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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