AOpen AX45H8XN User Manual

AX45-8X
AAXX4455HH--88XX // AAXX4455HH--88XXNN OOnnlliinnee MMaannuuaal

AX45H-8X / AX45H-8XN

DOC. NO.: AX45H8XN-OL-E0301A
Overview
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Installation
Hardware
Drivers &
Utilities
BIOS Setup
AWARD
Glossary
Troubleshooting &
Technical Support
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AX45H-8X / AX45H-8XN ................................................................................................................................1
What’s in this manual................................................................................................................................................................ 2
You Must Notice........................................................................................................................................................................ 8
Before You Start........................................................................................................................................................................9
Overview................................................................................................................................................................................. 10
Feature Highlight .....................................................................................................................................................................11
Quick Installation Procedure ................................................................................................................................................... 16
Motherboard Map ................................................................................................................................................................... 17
Block Diagram ........................................................................................................................................................................ 18
Hardware Installation ............................................................................................................................19
About “User Upgrade Optional” and “Manufacture Upgrade Optional”… ................................................................................. 20
CPU Installation ...................................................................................................................................................................... 21
Enlarged Aluminum Heatsink.................................................................................................................................................. 24
Full-range Adjustable CPU Core Voltage................................................................................................................................. 25
CPU and System Fan Connector (with H/W Monitoring) ......................................................................................................... 27
DIMM Sockets ........................................................................................................................................................................ 28
DDR 266(PC2100) and DDR 333(PC2700) ............................................................................................................................ 30
Front Panel Connector............................................................................................................................................................ 31
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ATX Power Connector............................................................................................................................................................. 32
AC Power Auto Recovery........................................................................................................................................................ 32
IDE and Floppy Connector...................................................................................................................................................... 33
ATA/133 Supported................................................................................................................................................................. 35
IrDA Connector....................................................................................................................................................................... 36
Support AGP 8X (Accelerated Graphic Port) Expansion Slot................................................................................................... 37
WOM (Zero Voltage Wake on Modem) Connector .................................................................................................................. 38
WOM by External BOX Modem............................................................................................................................................... 39
WOM by Internal Modem Card................................................................................................................................................ 40
WOL (Wake on LAN) .............................................................................................................................................................. 41
Support 10/100 Mbps LAN onboard (For AX45H-8XN) ........................................................................................................... 43
CNR (Communication and Network Riser) Expansion Slot...................................................................................................... 44
Support 2nd and 3rd USB 2.0 Ports........................................................................................................................................... 45
Colored Back Panel................................................................................................................................................................ 46
Super 5.1 Channel Audio Effect .............................................................................................................................................. 47
S/PDIF (Sony/Philips Digital Interface) Connector................................................................................................................... 48
Front Audio Connector............................................................................................................................................................ 49
Dr. LED Connector.................................................................................................................................................................. 50
Case Open Connector ............................................................................................................................................................ 52
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CD Audio Connector............................................................................................................................................................... 53
MODEM-CN Connector .......................................................................................................................................................... 54
JP14 Clear CMOS Data.......................................................................................................................................................... 55
JP28 Keyboard/Mouse Wake-up Jumper ................................................................................................................................ 56
JP29 Memory Voltage Jumper ................................................................................................................................................ 57
STBY LED .............................................................................................................................................................................. 58
AGP Protection Technology and AGP LED.............................................................................................................................. 59
Battery-less and Long Life Design .......................................................................................................................................... 61
Over-current Protection........................................................................................................................................................... 62
Hardware Monitoring............................................................................................................................................................... 63
Resetable Fuse....................................................................................................................................................................... 64
2200µF Low ESR Capacitor.................................................................................................................................................... 65
Phoenix-AWARD BIOS ............................................................................................................................67
About BIOS Function Description… ........................................................................................................................................ 68
How To Use Phoenix-Award™ BIOS Setup Program .............................................................................................................. 69
How To Enter BIOS Setup....................................................................................................................................................... 71
BIOS Upgrade under Windows environment ........................................................................................................................... 72
Vivid BIOS technology ............................................................................................................................................................ 74
Driver and Utility.................................................................................................................................... 75
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Auto-run Menu from Bonus CD............................................................................................................................................... 75
Install IDE Driver..................................................................................................................................................................... 76
Install USB2.0 Driver............................................................................................................................................................... 77
Installing LAN Driver (For AX45H-8XN)................................................................................................................................... 78
Installing Onboard Sound Driver ............................................................................................................................................. 81
Installing AGP Driver............................................................................................................................................................... 82
AOConfig Utility ...................................................................................................................................................................... 83
Installing Hardware Monitoring Utility ...................................................................................................................................... 85
Glossary .................................................................................................................................................86
AC97 CODEC......................................................................................................................................................................... 86
ACPI (Advanced Configuration & Power Interface) ................................................................................................................. 86
ACR (Advanced Communication Riser) .................................................................................................................................. 86
AGP (Accelerated Graphic Port) ............................................................................................................................................. 87
AMR (Audio/Modem Riser) ..................................................................................................................................................... 87
ATA (AT Attachment)............................................................................................................................................................... 87
BIOS (Basic Input/Output System).......................................................................................................................................... 88
Bluetooth ................................................................................................................................................................................ 88
CNR (Communication and Networking Riser) ......................................................................................................................... 89
DDR (Double Data Rate) RAM................................................................................................................................................ 89
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ECC (Error Checking and Correction)..................................................................................................................................... 89
EEPROM (Electronic Erasable Programmable ROM) ............................................................................................................. 90
EPROM (Erasable Programmable ROM)................................................................................................................................ 90
EV6 Bus.................................................................................................................................................................................. 90
FCC DoC (Declaration of Conformity) ..................................................................................................................................... 90
FC-PGA (Flip Chip-Pin Grid Array).......................................................................................................................................... 91
FC-PGA2 (Flip Chip-Pin Grid Array)........................................................................................................................................ 91
Flash ROM ............................................................................................................................................................................. 91
Hyper Threading..................................................................................................................................................................... 91
IEEE 1394 .............................................................................................................................................................................. 91
Parity Bit................................................................................................................................................................................. 92
PCI (Peripheral Component Interface) Bus ............................................................................................................................. 92
PDF Format............................................................................................................................................................................ 93
PnP (Plug and Play)................................................................................................................................................................ 93
POST (Power-On Self Test) .................................................................................................................................................... 93
PSB (Processor System Bus) Clock........................................................................................................................................ 93
RDRAM (Rambus Dynamic Random Access Memory) ........................................................................................................... 93
RIMM (Rambus Inline Memory Module).................................................................................................................................. 94
SDRAM (Synchronous DRAM) ............................................................................................................................................... 94
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SATA (Serial ATA) ................................................................................................................................................................... 94
SMBus (System Management Bus) ........................................................................................................................................ 94
SPD (Serial Presence Detect)................................................................................................................................................. 95
USB 2.0 (Universal Serial Bus) ............................................................................................................................................... 95
VCM (Virtual Channel Memory) .............................................................................................................................................. 95
Wireless LAN – 802.11b.......................................................................................................................................................... 95
ZIP file .................................................................................................................................................................................... 96
Troubleshooting .....................................................................................................................................97
Technical Support ................................................................................................................................101
Product Registration............................................................................................................................ 104
How to Contact Us............................................................................................................................... 105
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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
recommend using Adobe Acrobat Reader 4.0 for online viewing, it is included in Bonus CD
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
or you can get free download from Adobe web
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OOvveerrvviieeww
Thank you for choosing AOpen AX45H-8X / AX45H-8XN motherboard. AX45H-8X / AX45H-8XN is Intel® Socket 478 motherboard (M/B)
based on the ATX form factor featuring the SIS 648 chipset
motherboard can support Intel
AGP performance, it has one AGP slot and supports AGP 8X mode and pipelined spilt-transaction long burst transfer up to 2112MB/sec.
According to different customer’s requirements, this motherboard supports DDR333 (PC2700) SDRAM up to 2GB maximum and DDR 266
(PC2100) SDRAM up to 3GB maximum. The onboard IDE controller supports Ultra DMA
achieved by taking advantage of the Communication and Network Riser (CNR)
single baseboard design. More than that, on the strength of integrated SiS LAN controller with Realtek RTL8100BL PHY on board, which is
a highly integrated Platform LAN Connect device, it provides 10/100M bps Ethernet for office and home use. Besides, AX45H-8X /
AX45H-8XN has a S/PDIF connector and an AC97
performance and magic surround stereo sound to let people enjoy working with it. Now, let’s
enjoy all features from AOpen AX45H-8X / AX45H-8XN motherboard.
®
Socket 478 Pentium® 4 (Willamette / Northwood) 400MHz and 533MHz Front Side Bus (FSB) clock. In the
. As high performance chipset built in the M/B, AX45H-8X / AX45H-8XN
33/66/100/133 mode. Further flexibility can be
card option that allows audio and modem configuration on a
CODEC chipset onboard, providing high
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FFeeaattuurree HHiigghhlliigghhtt
CPU
Supports Intel® Socket 478 Pentium® 4 (Willamette / Northwood) 1.4GHz~3.06GHz+ with 400/533MHz Front Side Bus (FSB) designed for
Socket 478 technology.

Chipset

The motherboard is equipped with SIS 648 chipset. SIS 648 Host & Memory & AGP Controller integrates a high performance host interface
for Intel Pentium 4 processor, a high performance memory controller, a AGP interface. The SIS 648 Host Interface supports Intel Pentium
4 Series processors with FSB up to 133MHz. 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 can support both DDR and SDR. The memory controller also supports 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 can
support external AGP slot with AGP 2X/4X/8X capability and Fast Write Transactions.
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Expansion Slots

Including six 32-bit/33MHz PCI, one CNR and one AGP 2X/4X/8X slots. The PCI local bus throughput can be up to 132MB/s. The
Communication & Nectworking Riser (CNR)
card. The Accelerated Graphics Port (AGP)
cards support data transfer rate up to 2112MB/s. Of six PCI slots provided, all of them are master PCI slots with arbitration and decoding for
all integrated functions and LPC bus.
slot provided from AX45H-8X / AX45H-8XN can support CNR interface for a Modem/Audio
specification provides a new level of video display sophistication and speed. The AGP video

Memory

Provides three 184-pin DDR SDRAM DIMM sockets that support up to 2GB of PC2700(DDR333) and 3GB of PC2100(DDR266) compliant
SDRAM (Synchronous Dynamic Random Access Memory).

Watch Dog Timer

Includes AOpen “Watch Dog Timer” function that can auto-reset system in 4.8 seconds when you fail to system overclocking.

1MHz Stepping CPU Frequency Adjustment

Provides “1MHz Stepping 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 AX45H-8XN)
On the strength of integrated SIS LAN controller with Realtek RTL8100BL PHY on board, which is a highly-integrated Platform LAN
Connect device, it provides 10/100 Mbps Ethernet for office and home use.

Ultra DMA 33/66/100/133 Bus Mater 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 33/66/100/133, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices.
On-board AC’97 Sound
AX45H-8X / AX45H-8XN uses RealTek ALC650 AC97 sound chip. This on-board audio includes a complete audio recording and playback
system.

Six USB2.0 Ports

Provides four ports on the back panel and one connector with a total of six USB ports for USB2.0 interface devices, such as mouse,
keyboard, modem, scanner, etc.

Dr. LED

Dr. LED has 8 LEDs on this AX45H-8X / AX45H-8XN M/B to easily show what kind of problems you may encounter.
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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.

S/PDIF Connectors

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 that confirms to the power-saving standards of the U.S. Environmental 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.
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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.
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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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Realtek 8100BL PH
(For AX45H-8XN)
MODEM-CN Connecto
ALC650 AC’97 CODEC
Front Audio Connecto
CD-IN Connecto
Chassis Intrusion Detecto
32-bit PCI Expansion Slot x6
CNR Expansion Slo
WOM Connecto
S/PDIF Connecto
WOL Connecto
Dr. LED Connecto
nd
& 3rd USB2.0 Connectors
2
IrDA Connecto
2MB Flash ROM BIOS
Front Panel Connecto
JP14 CMOS Clear Jumpe
SYSFAN3 Connecto

Motherboard Map

17
PC99 Colored Back Panel
Resettable Fuse JP28 PS2 Keyboard/
Mouse Wakeu
4-pin 12V. ATX Power Connector
2200μF Low ESR Capacitors
GP 8x Expansion Slot
478-pin CPU socket (Willamette/ Northwood) with Voltage and Frequency
uto-detection that supports
®
Intel
Pentium® 4
1.4~3.06GHz+ CPU
CPUFAN1 connecto
SIS 648/963L Chipset
184-pin DIMMx3 supports PC2100/2700 DDR SDRAM maximum up to 3GB/2GB
TX Power Connector
JP29 Memory Voltage Jumper
TA100/133 IDE Connector x2
FDD Connector
Jumper
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BBlloocckk DDiiaaggrraamm
Socket 478
Intel Pentium 4
CPU(Willamette
/Northwood)
AGP 8X Slot
DDR266/DDR333
DIMM Socket x3
533MHz System
Bus
LAN connect Component
AGERE FW803
Floppy Disk Drive x2
SDRAM Up to
3GB/2GB
SIS 648
USB2.0 Ports
32-bit PCI Slot x6
PCI Bus
ATA
66/100/133
Realtek
RTL8100BL
1stUSB Port
x6
2ndUSB Port
3rdUSB Port
Primary
Channel
Secondary
Channel
SIS 963L
Winbond
W83627HF
RealTek
AC97
CODEC
AC Link
2Mbit Flash EEPROM
Parallel Port
Serial Port x2
IDE Drive x4
CNR Slot
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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
www.aopen.com
for detail information.
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CCPPUU IInnssttaallllaattiioonn
This motherboard supports Intel® Pentium 4 Socket 478 series CPU (Willamette / 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.
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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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.
CPU cut edge
Note: If you do not match the CPU
socket Pin 1 and CPU cut edge well, you
ma
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 correctl to the four corners.
2. Pressing down the four clips with force one by one on the retention module.
Clip
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EEnnllaarrggeedd AAlluummiinnuumm HHeeaattssiinnkk
Cool down CPU and Chipset are important for system reliability. Enlarged aluminum heat sink provides better heat consumption especially
when you are trying to over-clock the CPU.
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FFuullll--rraannggee AAddjjuussttaabbllee CCPPUU CCoorree VVoollttaaggee
This function is dedicated to overclockers and supports Adjustable CPU Core Voltage from 1.10V to 1.85V. However, this motherboard can
also automatically detects CPU VID signal and generates proper CPU core voltage.
SSeettttiinngg CCPPUU FFrreeqquueennccyy
BIOS Setup > Frequency/Voltage Control > CPU Clock Setting
This motherboard is CPU jumper-less design, you can set CPU frequency through the BIOS setup, and no jumpers or switches are needed.
You can adjust the FSB from "CPU Host/SDRAM/PCI Clock" for overclocking.
Core Frequency = CPU FSB Clock * CPU Ratio
PCI Clock = CPU FSB Clock / Clock Ratio
AGP Clock = PCI Clock x 2
CPU Ratio
CPU FSB
10x… 21x, 22x, 23x, 24x
100~248MHz by 1MHz stepping
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Northwood CPU
Pentium 4 1.6G 1600MHz 100MHz 400MHz 16x
Pentium 4 1.6G 1600MHz 133MHz 533MHz 12x
Pentium 4 1.7G 1700MHz 133MHz 533MHz 13x
Pentium 4 1.8G 1800MHz 100MHz 400MHz 18x
Pentium 4 2.0G 2000MHz 100MHz 400MHz 20x
Pentium 4 2.2G 2200MHz 100MHz 400MHz 22x
Pentium 4 2.2G 2200MHz 133MHz 533MHz 16x
Pentium 4 2.4G 2400MHz 100MHz 400MHz 24x
Pentium 4 2.4G 2400MHz 133MHz 533MHz 18x
Pentium 4 2.53G 2530MHz 133MHz 533MHz 19x
Pentium 4 2.6G 2600MHz 100MHz 400MHz 26x
Pentium 4 2.66G 2660MHz 133MHz 533MHz 20x
Pentium 4 2.8G 2800MHz 133MHz 533MHz 21x
Pentium 4 3.06G 2800MHz 133MHz 533MHz 23x
CPU Core
Frequency
FSB
Clock
System
Bus
Ratio
Warning: SIS 648 chipset supports maximum 400MHz
(100MHz*4) / 533MHz (133MHz*4) system bus and
66MHz AGP clock; higher clock setting may cause
serious system damage.
Willamette CPU
Pentium 4
1.5G
Pentium 4
1.6G
Pentium 4
1.7G
Pentium 4
1.8G
Pentium 4
1.9G
Pentium 4
2.0G
Celeron CPU
Pentium 4
1.7G
Pentium 4
1.8G
CPU Core
Frequency
1500MHz 100MHz 400MHz 15x
1600MHz 100MHz 400MHz 16x
1700MHz 100MHz 400MHz 17x
1800MHz 100MHz 400MHz 18x
1900MHz 100MHz 400MHz 19x
2000MHz 100MHz 400MHz 20x
CPU Core
Frequency
1700MHz 100MHz 400MHz 17x
1800MHz 100MHz 400MHz 18x
FSB
Clock
FSB
Clock
Note: Since the latest processor, Northwood,
would detect the clock ratio automatically,
you may not be able to adjust the clock ratio
in BIOS manually.
System
Bus
System
Bus
Ratio
Ratio
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CCPPUU aanndd SSyysstteemm FFaann CCoonnnneeccttoorr ((wwiitthh HH//WW MMoonniittoorriinngg))
Plug in the CPU fan cable to the 3-pin CPUFAN1 connector. If you have chassis fan, you can also plug it on SYSFAN2 or SYSFAN3
connector.
SYSFAN3 Connector
CPUFAN1 Connector
SYSFAN2 Connector
GND +12V SENSOR
Note: Some CPU fans do not have
sensor pin, so that they cannot support
hardware monitoring function.
GND +12V SENSOR
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DDIIMMMM SSoocckkeettss
This motherboard has three 184-pin DDR DIMM sockets that allow you to install PC2100 (DDR266) memory up to 3GB or PC2700
(DDR333) memory up to 2GB. Please note that when you install PC1600 or PC2100 DDR SDRAM, you can install them fully into 3 sockets;
however, when you install PC2700 DDR SDRAM, we suggest you to install DIMM1 and DIMM2 ONLY.
DIMM1 DIMM2 DIMM3
DIMM 1
DIMM 2
DIMM 3
PC2100/PC1600
DDR SDRAM
V V
V V
V
PC2700
DDR SDRAM
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HHooww ttoo IInnssttaallll MMeemmoorryy MMoodduulleess
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.
Pin 1
Ta b
Key
52 pins 40 pins
29
Pin 1
Note: The tabs of the DIMM slot
will close-up to hold the DIMM in
place when the DIMM touches the
slot’s bottom.
AAXX4455HH--88XX // AAXX4455HH--88XXNN OOnnlliinnee MMaannuuaal
l
DDDDRR 226666((PPCC22110000)) aanndd DDDDRR 333333((PPCC22770000))
DDR SDRAM utilizes the existing SDRAM infrastructure and technology while doubling the nominal bandwidth available to systems. To p u t
it in a simple way, DDR SDRAM is like data going along a two lane highway, while at the same time data in traditional SDRAM go along a
one way street. Therefore, it is a more advanced technology that provides a great overall improvement in system performance. DDR266
(PC2100) runs two times faster than the traditional PC133 SDRAM with the speed of Front Side Bus (FSB) up to 266MHz. (2x133=266).
And DDR333 (PC2700) is running at 333MHz FSB. Both PC2100 and PC2700 are a new naming standard for speed of DDR 266 and
DDR 333, representing their theoretical speeds of the RAM. The theoretical transfer rate of DDR 266 (PC2100) is 2.1GB/s and 2.7GB/s is
for DDR 333 (PC2700).
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