AOpen AX4CMAX User Manual
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AX4C-G / AX4C Pro / AX4C Max
DOC. NO.: AX4CMAX-OL-E0312B
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AX4C-G / AX4C Pro / AX4C Max.........................................................................................................1
What’s in this manual ...................................................................................................................................................... 2
You Must Notice .............................................................................................................................................................. 9
Before You Start............................................................................................................................................................ 10
Overview ....................................................................................................................................................................... 11
AX4C-G / AX4C Pro / AX4C Max Comparison Table ..................................................................................................... 12
Feature Highlight........................................................................................................................................................... 13
Quick Installation Procedure .........................................................................................................................................18
Motherboard Map .......................................................................................................................................................... 19
Block Diagram ............................................................................................................................................................... 20
Hardware Installation................................................................................................................ 21
About “Manufacturer Upgrade Optional” and “User Upgrade Optional”… ...................................................................... 22
JP14 Clear CMOS Data ................................................................................................................................................ 23
CPU Installation ............................................................................................................................................................ 24
CPU Jumper-less Design .............................................................................................................................................. 27
CPU Core Voltage Auto Detectable ............................................................................................................................... 29
CPU and System Fan Connector (with H/W Monitoring) ............................................................................................... 31
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JP28 Keyboard/Mouse Wake-up Enable/Disable Jumper .............................................................................................. 32
DIMM Sockets (128-Bit DDR Dual Channel) .................................................................................................................33
Front Panel Connector..................................................................................................................................................35
ATX Power Connector................................................................................................................................................... 36
AC Power Auto Recovery..............................................................................................................................................3 7
STBY LED and BOOT LED ...........................................................................................................................................38
IDE and Floppy Connector............................................................................................................................................39
ATA/133 Supported (AX4C Max only)............................................................................................................................41
Serial ATA Supported (with RAID function) .................................................................................................................... 42
Connecting Seri al ATA Disk........................................................................................................................................... 43
IrDA Connector .............................................................................................................................................................46
S/PDIF (Sony/Philips Digital Interf ace) C onnect or (AX4C Pro, AXC Max onl y) ............................................................. 47
Super 5.1 Channel Audio Effect (AX4C Pro, AX4C Max only)....................................................................................... 48
AGP 8X Slot.................................................................................................................................................................. 49
AGP Protection Technology and AGP LED.................................................................................................................... 50
Self-Powered PC I Sl ot ..................................................................................................................................................51
WOM (Zero Voltage Wake on Modem) Connector.........................................................................................................52
WOL (Wake on LAN).....................................................................................................................................................55
PC99 Color Coded Back Panel .....................................................................................................................................57
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Support Gigabit or 10/100Mbps LAN onboard (AX4C Pro, AX4C Max only).................................................................. 58
Support Eight USB2.0 Connectors ................................................................................................................................ 59
Onboard IEEE 1394 Controller (AX4C Max only) ..........................................................................................................60
Chassis Intrusion Connector .........................................................................................................................................61
CD Audio Connector ..................................................................................................................................................... 62
AUX-IN Connector......................................................................................................................................................... 63
Front Audio Connector .................................................................................................................................................. 64
Die-Hard BIOS II (AX4C-G, AX4C Max, AX4C Pro - User Upgrade Optional)................................................................ 65
External Controller for DIE-HARD BIOS (AX4C-G, AX4C Max, AX4C Pro - User Upgrade Optional)............................. 66
JP2 Dr. Voice Output Select Jumper (AX4C Pro, AX4C Max only) ................................................................................68
Dr. LED Connector ........................................................................................................................................................ 69
Battery-less and Long Life Design................................................................................................................................. 71
CPU Over-current Protection......................................................................................................................................... 72
AOConfig Utility ............................................................................................................................................................. 73
Resetable Fuse ............................................................................................................................................................. 75
3300µF Low ESR Capacitor .......................................................................................................................................... 76
Fansink on North Bridge................................................................................................................................................ 77
Open JukeBox Player.................................................................................................................................................... 78
Vivid BIOS technology................................................................................................................................................... 82
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Hyper Threading Technology......................................................................................................................................... 83
RAID Introduction...................................................................................................................... 85
What’s RAID?................................................................................................................................................................ 85
What are the RAID levels? ............................................................................................................................................ 86
HDD Capacity of RAID Levels ....................................................................................................................................... 89
Serial ATA RAID for Intel ICH5R.................................................................................................................................... 90
Serial ATA RAID for Promise PDC20378 ....................................................................................................................... 93
Driver and Utility .....................................................................................................................110
Auto-run Menu from Bonus CD Disc ........................................................................................................................... 110
Installing Intel® Chipset Software Installation Utility.....................................................................................................111
BroadCOM BCM5705 Gigabit LAN Driver (AX4C Max only)........................................................................................ 112
BroadCOM BCM4401 10/100 LAN Driver (AX4C Pro only) .........................................................................................123
Installing Onboard Sound Driver (AX4C Pro, AX4C Max only) .................................................................................... 135
The noise is gone!! ---- SilentTek ................................................................................................................................ 151
EzClock....................................................................................................................................................................... 154
PHOENIX-AWARD BIOS............................................................................................................ 158
About Phoenix-Award BIOS Function Description….................................................................................................... 159
How To Use Phoenix-Award™ BIOS Setup Program................................................................................................... 160
How To Enter BIOS Setup ........................................................................................................................................... 161
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WinBIOS Utility ........................................................................................................................................................... 162
BIOS Upgrade under Windows environment ...............................................................................................................164
Glossary .................................................................................................................................. 166
AC97 CODEC ............................................................................................................................................................. 166
ACPI (Advanced Configuration & Power Interface) ..................................................................................................... 166
ACR (Advanced Communication Riser)....................................................................................................................... 166
AGP (Accelerated Graphic Port).................................................................................................................................. 167
AMR (Audio/Modem Riser).......................................................................................................................................... 167
ATA (AT Attachment) ................................................................................................................................................... 167
BIOS (Basic Input/Output System) .............................................................................................................................. 168
Bluetooth..................................................................................................................................................................... 168
CNR (Communication and Networking Riser).............................................................................................................. 169
DDR (Double Data Rate) RAM .................................................................................................................................... 169
ECC (Error Checking and Correction) ......................................................................................................................... 170
EEPROM (Electronic Erasable Programmable ROM).................................................................................................. 170
EPROM (Erasable Programmable ROM)..................................................................................................................... 170
EV6 Bus ...................................................................................................................................................................... 170
FCC DoC (Declaration of Conformity) .........................................................................................................................171
FC-PGA (Flip Chip-Pin Grid Array) .............................................................................................................................. 171
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FC-PGA2 (Flip Chip-Pin Grid Array) ............................................................................................................................ 171
Flash ROM .................................................................................................................................................................. 171
Hyper Threading ......................................................................................................................................................... 171
IEEE 1394................................................................................................................................................................... 172
Parity Bit ..................................................................................................................................................................... 172
PCI (Peripheral Component Interface) Bus .................................................................................................................173
PDF Format................................................................................................................................................................. 173
PnP (Plug and Play) .................................................................................................................................................... 173
POST (Power-On Self Test) ........................................................................................................................................173
PSB (Processor System Bus) Clock ............................................................................................................................ 174
RDRAM (Rambus Dynamic Random Access Memory) ................................................................................................ 174
RIMM (Rambus Inline Memory Module) ......................................................................................................................174
SDRAM (Synchronous DRAM) .................................................................................................................................... 174
SATA (Serial ATA) ....................................................................................................................................................... 175
SMBus (System Management Bus) ............................................................................................................................. 175
SPD (Serial Presence Detect) ..................................................................................................................................... 175
USB 2.0 (Universal Serial Bus) ...................................................................................................................................175
VCM (Virtual Channel Memory)................................................................................................................................... 176
Wireless LAN – 802.11b .............................................................................................................................................. 176
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ZIP file......................................................................................................................................................................... 177
Troubleshooting....................................................................................................................... 178
Technical Support ...................................................................................................................182
Product Registration ...............................................................................................................185
How to Contact Us .................................................................................................................. 186
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CPU
Supports Intel® Socket 478 Pentium® 4 1.6GHz~3.06GHz+ with 800/533MHz Front Side Bus (FSB) designed for Socket 478
technology.
Chipset
With the Intel® 875P (Canterwood) chipset, Intel delivers a discrete graphics solution with all the performance, innovative
features and proven reliability of the Intel
(Canterwood) chipset offers an ideal, leading-edge AGP graphics solution for Intel
the smart integration in the Intel 875P (Canterwood) chipset's I/O Controller Hub features USB controllers supporting eight USB
ports and integrated Serial ATA function (ICH5 for AX4C-G, ICH5R for AX4C Pro, AX4C Max) that offers faster transfer rate of
150Mbps, plus RAID functions of RAID 0 (AX4C Pro) and RAID 0, 1, 0+1 (AX4C Max). With support for 5.1 channels of AC’97
audio (AX4C Pro, AX4C Max only) and the ability to make the most of soft audio/modem technology, the 875P (Canterwood)
chipset delivers an ideal solution for innovative new form factors.
®
875P (Canterwood) chipset. With its highly scalable design, the new 875P
®
Pentium® 4 processor platforms . Additionally,
Expansion Slots
Including five 32-bit/33MHz PCI, in which PCI 5 is named as Self-Powered, which is reserved especially for high
power-consuming PCI cards, and one AGP 8X slot. The PCI
it supports 1.5V AGP interface with 8x Data Transfer capability and pipelined spilt-transaction long burst transfer up to
2.1GB/sec.
local bus throughput can be up to 132MB/s. For AGP performance,
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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
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 recommend using Adobe Acrobat Reader 4.0 for online viewing, it is included in Bonus CD disc or you can
.
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OOvveerrvviieeww
Thank you for choosing AOpen AX4C-G / AX4C Pro / AX4C Max motherboard. The AX4C-G / AX4C Pro / AX4C Max is Intel®
Socket 478 motherboard (M/B) based on the ATX form factor featuring the Intel® 875P (Canterwood) chipset
performance chipset built in the M/B, the AX4C-G / AX4C Pro / AX4C Max motherboard supports Intel
and 800/533 MHz Front Side Bus (FSB)
spilt-transaction long burst transfer up to 2.1GB/sec. According to different customer’s requirements, the Intel 875P
(Canterwood) chipset memory interface supports DDR400/DDR333
1GB DDR SDRAM DIMM modules and the maximum memory size can be up to 4 GB. The onboard IDE controller supports
Ultra DMA
Serial ATA in chipset, it aims to provide you an even faster transfer rate of 150
Mbytes/second (For AX4C Pro which supports RAID 0, 1, and AX4C Max
which supports, 0, 1, 0+1 RAID only). On the strength of Broadcom
10/100Mbps LAN Chip (For AX4C Pro only) and Broadcom Gigabit
PCI LAN Chip (For AX4C Max only), which is an highly-integrated
Platform LAN Connect device, it provides Gigabits or 10/100Mbps
Ethernet for office and home use. Besides, the AX4C Pro / AX4C
Max has an AC97
performance and magic surround stereo sound to let people
enjoy working with it. More than that, this motherboard
supports USB 2.0
480Mbps, and IEEE 1394
provides data transfer rate up to 400Mbps. Now, let’s enjoy all features from
AOpen AX4C-G / AX4C Pro / AX4C Max motherboard.
®
Socket 478 Pentium® 4
clock. In the AGP performance, it supports 1.5V AGP 8X interface and pipelined
DDR DRAM devices with densities of 128, 256, 512MB and
33/66/100 and Promise (PDC20378) 133 mode with transfer rate up to 133MB/s (AX4C Max only). With integrated
CODEC chipset onboard, providing high
function with a fancy speed of up to
controller (AX4C Max only) to
. As high
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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.
Chipset (NB, SB)
LAN Port
IEEE 1394
Serial ATA Ports
RAID
S/PDIF
ATA133
Dr. Voice II
AC’97 CODEC
875P (Canterwood), ICH5 875P (Canterwood), ICH5R 875P (Canterwood),
AX4C-G AX4C Pro AX4C Max
X V V
X X V
X2 x2 x4
X V V
X V V
X X V
X V V
X V V
ICH5R
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CPU
Supports Intel® Socket 478 Pentium® 4 1.6GHz~3.06GHz+ with 800/533MHz Front Side Bus (FSB) designed for Socket 478
technology.
Chipset
With the Intel® 875P (Canterwood) chipset, Intel delivers a discrete graphics solution with all the performance, innovative
features and proven reliability of the Intel
(Canterwood) chipset offers an ideal, leading-edge AGP graphics solution for Intel
the smart integration in the Intel 875P (Canterwood) chipset's I/O Controller Hub features USB controllers supporting eight USB
ports and integrated Serial ATA function (ICH5 for AX4C-G, ICH5R for AX4C Pro, AX4C Max) that offers faster transfer rate of
150Mbps, plus RAID functions of RAID 0, 1 (AX4C Pro) and RAID 0, 1, 0+1 (AX4C Max). With support for 5.1 channels of AC’97
audio (AX4C Pro, AX4C Max only) and the ability to make the most of soft audio/modem technology, the 875P (Canterwood)
chipset delivers an ideal solution for innovative new form factors.
®
875P (Canterwood) chipset. With its highly scalable design, the new 875P
®
Pentium® 4 processor platforms. Additionally,
Expansion Slots
Including five 32-bit/33MHz PCI, in which PCI 5 is named as Self-Powered, which is reserved especially for high
power-consuming PCI cards, and one AGP 8X slot. The PCI
it supports 1.5V AGP interface with 8x Data Transfer capability and pipelined spilt-transaction long burst transfer up to
2.1GB/sec.
local bus throughput can be up to 132MB/s. For AGP performance,
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Memory
Provides ECC four 184-pin DDR RAM DIMM sockets that support up to 4GB of DDR400/333 compliant DDR RAM (Synchronous
Dynamic Random Access Memory). You may install 128, 256, 512MB or 1GB DDR RAM DIMM modules into each socket.
LAN Port (AX4C Pro and AX4C Max only)
Broadcom 10/100Mbps LAN Chip (For AX4C Pro only) and Broadcom Gigabit PCI LAN Chip (For AX4C Max only), which is an
highly-integrated Platform LAN Connect device, it provides Gigabits or 10/100Mbps Ethernet for office and home use.
Ultra DMA 33/66/100, Promise 133 IDE (AX4C Max only)
Comes with an on-board PCI Bus Master IDE controller with two connectors that supports four IDE devices in two channels,
supports
Besides, this motherboard comes with Promise controller (AX4C Max only) that supports 133 mode.
Ultra DMA
33/66/100, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices.
On-board AC’97 Sound (AX4C Pro and AX4C Max only)
AX4C Pro / AX4C Max uses the AC97 sound chip. This on-board audio includes a complete audio recording and playback
system.
1MHz Stepping Frequency Adjustment
Provides “1MHz Stepping Frequency Adjustment” function in the BIOS. This magic function allows you adjust FSB frequency
from 100~400 by 1MHz stepping adjustment, and lets your system can get maximum performance.
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Watch Dog ABS
Includes AOpen “Watch Dog ABS” function that can auto-reset default settings in 4.8 seconds when you fail to system
overclocking.
Die-Hard BIOS II (For AX4C-G, and AX4C Max, and AX4C Pro - User Upgrade Optional)
The Die-Hard BIOS technology is a very effective hardware protection method that doesn’t involve any software or BIOS coding.
Hence, it is 100% virus free. This motherboard comes with BIOS 1 and BIOS 2 (User Upgrade Optional) that allow you to rescue
BIOS 1 with BIOS 2.
S/PDIF Connectors (AX4C Pro and AX4C Max only)
S/PDIF (Sony/Philips Digital Interface) is a newest audio transfer format, which provides impressive quality through optical fiber
and allows you to enjoy digital audio instead of analog audio.
IEEE 1394 ports (AX4C Max only)
This motherboard comes with IEEE 1394a controller onboard, which provides data transfer rate up to 400Mbps. to connect with
the devices that need high data transferring performance, such as digital camera, scanner or others IEEE 1394 devices.
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Eight USB Connectors (2.0)
Provides three ports, eight USB connectors for USB interface devices, such as mouse, keyboard, modem, scanner, etc.
Compared to traditional USB 1.0/1.1 with the speed of 12Mbps, USB 2.0 has a fancy speed up to 480Mbps, which is 40 times
faster than the traditional one.
Dr. LED (User Upgrade Optional)
The Dr. LED has 8 LEDs on this AX4C-G / AX4C Pro / AX4C Max M/B to easily show what kind of problems you may encounter.
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
making the system much user-friendlier.
Plug-and-Play
, which helps save users from configuration problems, thus
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/XP 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 COM1or COM2 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
Installing Operating System (such as Windows 98)
10.
Installing Driver and Utility
11.
18
d
(
y)
Broadcom 10/100Mbps LAN Chip
Broadcom Gigabit PCI LAN Chip
(AX4C Pro–User Upgrade Optional)
(AX4C Pro, AX4C Max only)
(AX4C Pro, AX4C Max only)
(AX4C Pro, AX4C Max only)
(AX4C Pro, AX4C Max only)
(AX4C Pro, AX4C Max only)
(Slot 5: Self-Powered PCI card supports
high power-consuming PCI cards)
(AX4C Max with RAID 0, 1, 0+1)
(AX4C Pro with RAID
Chassis Intrusion Connector
JP24 DieHard BIOS Rescue Jumper
JP2 Dr. Voice Output Select Jumper
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(AX4C Pro only)
(For AX4C Max only)
Die-Hard BIOS (BIOS1 & 2)
(AX4C-G, AX4C Max)
Onboard AC’97 CODEC
S/PDIF Connector
GAME Connector
CD-IN Connector
AUX-IN Connector
Front Audio Connector
WOL Connector
(AX4C Pro, AX4C Max only)
(AX4C Pro, AX4C Max only)
32-bit PCI Expansion Slot x5
IEEE 1394 Connectors x 2
(User Upgrade Optional)
(AX4C Pro, AX4C Max only)
JP14 CMOS Clear Jumper
WOM Connector
AX4C Max onl
n
USB (2.0) Connector
2
Serial ATA Ports x 4
Dr. LED Connector
Front Panel Connector
SYSFAN3 Connector
STBY LED
0, 1 only)
IrDA Connector
Motherboard Map
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PC99 Colored Back Panel
Resetable Fuse
JP28 Keyboard/Mouse Wakeup
Enable/Disable Jumper
CPUFAN1 Connector with H/W
Monitoring Function
SYSFAN2 Connector
3300μF Low ESR Capacitors
AGP LED
AGP Slot
(For 1.5V AGP card only)
478-pin CPU socket with Voltage
and Frequency Auto-detection
support Intel
Intel® 875P (Canterwood) and
ICH5 chipsets
ICH5R (AX4C Pro, AX4C Max)
BOOT LED
4-pin 12V. ATX Power Connector
184-pin DIMMx4
support DDR400/333
(Max. to 4GB)
ATX Power Connector
FDD Connector
ATA 33/66/100
IDE Connector x2
Promise ATA133 IDE Connector x1
(AX4C Max only)
®
Pentium® 4 CPU
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BBlloocckk DDiiaaggrraamm
Socket 478
Intel
Pentium 4
CPU
AGP 8x Slot
Floppy Disk Drive x2
800/533MHz
System Bus
LAN connect Component
(AX4C Pro and AX4C
Max only)
DDR400/333 DDR RAM Up to
DIMM Socket x4
4GB
Intel 875P
USB 2.0
Connector x8
PCI Bus
Broadcom 10/100Mbps LAN
(AX4C Pro)
Broadcom Gigabit LAN
(AX4C Max)
1stUSB Port
2ndUSB Port
3rdUSB Port
4thUSB Port
32-bit PCI Slot x5
Promise
PDC20378
ATA
33/66100
Serial ATA
Third Channel
ATA 133
Primary
Channel
Secondary
Channel
Intel ICH5
(AX4C-G)
Intel ICH5R
(AX4C Pro,
AX4C Max)
Low
Pin
Count
Super
I/O
Self-Powered
PCI slot
AC97
CODEC
IEEE 1394
Firmware Hub
4Mbit Flash EEPROM
Parallel Port
Serial Port x2
(AX4C Pro and
AX4C Max only)
Connector x 2
(AX4C Max only)
SATA Drive x2
IDE Drive x6
SATA Drive x2
IEEE 1394
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This chapter describes jumpers, connectors and hardware devices of this motherboard.
Note: Electrostatic discharge (ESD) can damage your processor, disk drives, expansion boards, and
other components. Always observe the following precautions before you install a system component.
1. Do not remove a component from its protective packaging until you are ready to install it.
2. Wear a wrist ground strap and attach it to a metal part of the system unit before handling a
component. If a wrist strap is not available, maintain contact with the system unit throughout any
procedure requiring ESD protection.
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AAbboouutt ““MMaannuuffaaccttuurreerr UUppggrraaddee OOppttiioonnaall”” aanndd ““UUsseerr UUppggrraaddee
OOppttiioonnaall””……
When you read this online manual and start to assemble your computer system, you may find some of functions are called
“Manufacturer Upgrade Optional”, and some are called “User Upgrade Optional”. Though all AOpen motherboards include many
amazing and powerful features, in some situations, these powerful features are not used to every user. Hence, we changed
some key features as “Manufacturer Upgrade Optional” for you to choose. Some optional functions that can be upgraded by
users, we call them “User Upgrade Optional”. As for those optional functions that can’t be upgraded by ourselves, we call them
“Manufacturer Upgrade Optional”. If needed, you can contact our local distributors or resellers for purchasing “User Upgrade
Optional” components, and again you can visit AOpen official web site: http://english.aopen.com.tw/
for more detail information.
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JJPP1144 CClleeaarr CCMMOOSS DDaattaa
You can clear CMOS to restore system default setting. To clear the CMOS, follow the procedure below.
1. Turn off the system and unplug the AC power.
2. Remove ATX power cable from connector PWR2.
3. Locate JP14 and short pins 2-3 for a few seconds.
4. Return JP14 to its normal setting by shorting pins 1 & pin2.
5. Connect ATX power cable back to connector PWR2.
Clear CMOS
Pin 1
1
Normal Operation
(default)
1
Tip: When should I Clear CMOS?
1. Boot fail because of overclocking…
2. Forget password…
3. Troubleshooting…
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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.
i
2. Locate Pin 1 in the socket and look for a cut edge on the CPU upper
interface. Match Pin 1 and cut edge, then insert the CPU into the socket.
Note: These pictures are for example only, it may not exactly be the same motherboard.
CPU socket
Lever
CPU pin 1 and
cut edge
CPU cut edge
24
y
AAXX44CC-
Note: This picture is for example only, it may not exactly be the same motherboard.
-G
G // AAX
3. Press down the CPU socket lever and finish
CPU installation.
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CPU cut edge
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.
Note: If you do not match the CPU
socket Pin 1 and CPU cut edge well, it
ma
damage the CPU.
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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.
2. Pressing down the four clips with force one by
one on the retention module.
Clip
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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
designs are eliminated. There will be no worry of wrong CPU voltage detection.
, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less
Intel® Socket 478
Pentium 4 CPU
CPU VID signal
Power Regulator
(Autom atic all y generates CPU voltage)
CPU voltage
Clock
Generator
CPU Freq. Ratio
BIOS
Controlled
Circuit
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AAOOppeenn ““WWaattcchh DDoogg AABBSS””
the “Watch Dog ABS” will reset the system to reboot in five seconds. Then, BIOS will detect the CPU’s default frequency and
POST again. With this special feature, you can easily overclock your system to get higher system performance, and without
removing the cover of system housing to set the jumper to clear CMOS data when your system hanged.
AOpen
Watch Dog ABS
Enable/Disable Signal
With this motherboard, AOpen provides a very special, useful feature for overclockers.
When you power-on the system, the BIOS will check last system POST
succeeded, the BIOS will enable “Watch Dog ABS” function immediately, and set the CPU
frequency by user’s setting that stored in the BIOS. If system failed in BIOS POST,
FSB
from BIOS
BIOS
Reset Signal
Clock Generator
Countdown about
5 seconds if fails
in POST
CPU
status. If it
CPU ID Signal
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This motherboard supports CPU VID function. The CPU core voltage will be automatically detected and the range is from 1.1V
to 1.925V. It is not necessary to set CPU Core Voltage.
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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.
CPU Ratio 8x, 9x, 10x,…22x, 23x…39x
CPU FSB 133~200MHz
1MHz Stepping CPU
Overclocking
Home
100~400MHz
Tip: If your system hangs or fails to boot because
of overclocking, simply use <Home> key to
restore the default setting or you can wait the
AOpen “Watch Dog ABS” reset the system after
five seconds and system will auto-detect
hardware again.
Tip: The North Bridge of Canterwood
does supports “Turbo mode”, which is
used to lower latency paths from FSB
to system memory that enhances the
system performance, when it is set at
FSB800 and DDR400 mode.
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Core Frequency = CPU FSB Clock * CPU Ratio
PCI Clock = CPU FSB Clock / Clock Ratio
AGP Clock = PCI Clock x 2
Northwood CPU
Pentium 4 1.6G 1600MHz 133MHz 533MHz 12x
Pentium 4 1.7G 1700MHz 133MHz 533MHz 13x
Pentium 4 2.26G 2260MHz 133MHz 533MHz 17x
Pentium 4 2.4G 2400MHz 133MHz 533MHz 18x
Pentium 4 2.53G 2530MHz 133MHz 533MHz 19x
Pentium 4 2.66G 2660MHz 133MHz 533MHz 20x
Pentium 4 2.80G 2800MHz 133MHz 533MHz 21x
Pentium 4 3.0G 3000MHz 200MHz 800MHz 15x
Pentium 4 3.06G 3060MHz 133MHz 533MHz 23x
CPU Core
Frequency
FSB Clock System Bus Ratio
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.
Warning: Intel 875P
(Canterwood) chipset supports
maximum 800/533MHz
(200/133MHz*4) system bus and
66MHz AGP clock; higher clock
setting may cause serious system
®
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