AOpen AX4SGUL User Manual
AAOOppeenn ii886655 FFaammiillyy MMo
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tthheerrbbooaarrddss OOnnlliinnee MMaannuuaal
AOpen i865 Family Motherboards
DOC. NO.:AX4SGUL-OL-E0309A
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WWhhaatt’’ss iinn tthhiiss mmaannuuaall
AOpen i865 Family Motherboards ..............................................................................................................1
What’s in this manual .................................................................................................................................................................... 2
You Must Notice ............................................................................................................................................................................ 8
Before You Start ............................................................................................................................................................................ 9
Overview ..................................................................................................................................................................................... 10
AOpen i865 Family Motherboards 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
JP14 Clear CMOS Data .............................................................................................................................................................. 24
CPU Installation........................................................................................................................................................................... 25
CPU Fan Installation ................................................................................................................................................................... 27
CPU Over-current Protection ...................................................................................................................................................... 29
AOpen “Watch Dog ABS”............................................................................................................................................................ 31
Full-range Adjustable CPU Core Voltage.................................................................................................................................... 32
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CPU and System Fan Connector (with H/W Monitoring) ............................................................................................................ 34
JP28 Keyboard/Mouse Wake-up Jumper.................................................................................................................................... 35
DIMM Sockets ............................................................................................................................................................................. 36
ATX Power Connector................................................................................................................................................................. 38
AC Power Auto Recovery............................................................................................................................................................ 38
IDE and Floppy Connector .......................................................................................................................................................... 39
Serial ATA Supported .................................................................................................................................................................. 41
Connecting Serial ATA Disk......................................................................................................................................................... 42
Front Panel Connector ................................................................................................................................................................ 45
AGP (Accelerated Graphic Port) 8X Expansion Slot................................................................................................................... 46
AGP Protection Technology and AGP LED ................................................................................................................................. 47
IrDA Connector............................................................................................................................................................................ 48
Support 10/100/1000 Mbps LAN onboard................................................................................................................................... 49
Support USB 2.0 Ports ................................................................................................................................................................ 50
Color Coded Back Panel ............................................................................................................................................................. 51
S/PDIF (Sony/Philips Digital Interface) Connector...................................................................................................................... 52
Super 5.1 Channel Audio Effect .................................................................................................................................................. 53
Wake On Modem / Wake On LAN / Wake On PCI Card............................................................................................................. 54
Front Audio Connector ................................................................................................................................................................ 55
Game Port Bracket Supported .................................................................................................................................................... 56
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COM2 Connector ........................................................................................................................................................................ 57
CD Audio Connector.................................................................................................................................................................... 58
AUX-IN Connector....................................................................................................................................................................... 59
Case Open Connector................................................................................................................................................................. 60
STBY LED (Standby LED) and BOOT LED ................................................................................................................................ 61
Resetable Fuse ........................................................................................................................................................................... 62
Enlarged Aluminum Heatsink ...................................................................................................................................................... 63
Low ESR Capacitor ..................................................................................................................................................................... 64
PBE – Performance Boosting Engine (for AX4SG and AX4SPE series) .................................................................................... 65
The noise is gone!! ---- SilentTek................................................................................................................................................. 66
EzClock ....................................................................................................................................................................................... 69
Hyper Threading Technology ...................................................................................................................................................... 73
AOConfig Utility ........................................................................................................................................................................... 75
Phoenix-AWARD BIOS ........................................................................................................................ 77
How to Use Phoenix-Award™ BIOS Setup Program .................................................................................................................. 78
How To Enter BIOS Setup........................................................................................................................................................... 79
BIOS Upgrade under Windows environment .............................................................................................................................. 80
Vivid BIOS technology................................................................................................................................................................. 82
Driver and Utility................................................................................................................................ 83
Auto-run Menu from Bonus CD ................................................................................................................................................... 83
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Installing Intel® Chipset Software Installation Utility..................................................................................................................... 84
Installing Intel Extreme Graphic Driver (only for AX4SG-U, AX4SG-UL and AX4SG-UN) ....................................................... 85
Installing Onboard Sound Driver ................................................................................................................................................. 86
Installing Gigabit LAN Driver (for AX4SG-UL, AX4SPE-UL and AX4SPB-UL) ......................................................................... 87
Installing Realtek 10/100 Mbps LAN Driver in Win98SE/2000/XP (for AX4SG-UN, AX4SPE-UN and AX4SPB-UN) .............. 98
Installing USB 2.0 Driver in Windows 98SE/ME........................................................................................................................ 102
Glossary ...........................................................................................................................................106
AC’97 CODEC........................................................................................................................................................................... 106
ACPI (Advanced Configuration & Power Interface)................................................................................................................... 106
ACR (Advanced Communication Riser) .................................................................................................................................... 106
AGP (Accelerated Graphic Port) ............................................................................................................................................... 107
AMR (Audio/Modem Riser) ....................................................................................................................................................... 107
ATA (AT Attachment) ................................................................................................................................................................. 107
BIOS (Basic Input/Output System)............................................................................................................................................ 108
Bluetooth ................................................................................................................................................................................... 108
CNR (Communication and Networking Riser)........................................................................................................................... 109
DDR (Double Data Rate) SDRAM............................................................................................................................................. 109
ECC (Error Checking and Correction)....................................................................................................................................... 109
EEPROM (Electronic Erasable Programmable ROM) .............................................................................................................. 109
EPROM (Erasable Programmable ROM).................................................................................................................................. 110
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EV6 Bus .................................................................................................................................................................................... 110
FCC DoC (Declaration of Conformity)....................................................................................................................................... 110
FC-PGA (Flip Chip-Pin Grid Array)............................................................................................................................................ 110
FC-PGA2 (Flip Chip-Pin Grid Array).......................................................................................................................................... 110
Flash ROM .................................................................................................................................................................................111
Hyper Threading.........................................................................................................................................................................111
IEEE 1394 ..................................................................................................................................................................................111
Parity Bit .................................................................................................................................................................................... 112
PCI (Peripheral Component Interface) Bus............................................................................................................................... 112
PDF Format............................................................................................................................................................................... 112
PnP (Plug and Play) .................................................................................................................................................................. 112
POST (Power-On Self Test) ...................................................................................................................................................... 112
PSB (Processor System Bus) Clock ......................................................................................................................................... 113
RDRAM (Rambus Dynamic Random Access Memory) ............................................................................................................ 113
RIMM (Rambus Inline Memory Module).................................................................................................................................... 113
SDRAM (Synchronous DRAM) ................................................................................................................................................. 113
SATA (Serial ATA)...................................................................................................................................................................... 114
SMBus (System Management Bus) .......................................................................................................................................... 114
SPD (Serial Presence Detect)................................................................................................................................................... 114
USB 2.0 (Universal Serial Bus) ................................................................................................................................................. 114
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VCM (Virtual Channel Memory) ................................................................................................................................................ 115
Wireless LAN – 802.11b............................................................................................................................................................ 115
ZIP file ....................................................................................................................................................................................... 115
Troubleshooting ............................................................................................................................... 116
Technical Support............................................................................................................................ 120
Product Registration........................................................................................................................ 124
How to Contact Us........................................................................................................................... 125
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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 AOpen i865 Family motherboards. AOpen i865 Family Motherboard is Intel® Socket 478 motherboard (M/B)
based on the ATX form factor featuring the Intel 865G chipsets (for AX4SG series), Intel 865PE chipsets (for AX4SPE series) and Intel
848P chipsets (for AX4SPB series). As high performance chipset built in the M/B, AOpen i865 Family motherboard supports Intel
Socket 478 Pentium
that brings additional intelligence to systems. In the AGP
spilt-transaction long burst transfer up to 2112MB/sec. For AX4SG series, it integrates VGA Engine in chipset and AGP 8X slot also
support ADD cards. According to different customer’s requirements, this M/B supports DDR266
maximum in Dual Channel mode. For AX4SPB series, it only has two RAM slots and supports Single Channel mode with maximum
capacity up to 2 GB. The onboard IDE controller supports Ultra DMA 33/66/100
provided on this board. 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 Mbps Ethernet (for -UL
series, it is 10/100/1000 Mbps) for office and home use. For
–U series motherboards, they do not support LAN onboard.
Besides, AOpen i865 Family motherboard has S/PDIF
connector and an AC’97 CODEC Realtek
providing high performance and magic surround stereo
sound to let people enjoy working with it. Now, let’s enjoy all
features from AOpen i865 Family motherboards.
®
4 1.6GHz~3.20GHz. It supports 400/533/800MHz Front Side Bus (FSB) clock and Hyper-Threading Technology
performance, it has one AGP slot to support AGP 8X/4X mode and pipelined
, DDR333 and DDR400 RAM up to 4GB
mode and Serial ATA 150 MB/s. There are 5 PCI slots
ports on the
chipset onboard,
®
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AAOOppeenn ii886655 FFaammiillyy MMootthheerrbbooaarrddss 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.
Series Model Chipset
AX4SG-U
AX4SG Series
AX4SPE Series
AX4SPB Series
AX4SG-UL
AX4SG-UN
AX4SPE-U
AX4SPE-UL
AX4SPE-UN
AX4SPB-U
AX4SPB-UL
Dual
Channel
Intel 865G V 4 X V V V
Intel 865G V 4 10/100/1000 Mbps V V V
Intel 865G V 4 10/100Mbps V V V
Intel 865PE V 4 X X X V
Intel 865PE V 4 10/100/1000 Mbps X X V
Intel 865PE V 4 10/100Mbps X X V
Intel 848P X 2 X X X X
Intel 848P X 2 10/100/1000 Mbps X X X
RAM
Slots
LAN VGA
Support
ADD card
PBE
AX4SPB-UN
Intel 848P X 2 10/100Mbps X X X
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FFeeaattuurree HHiigghhlliigghhtt
CPU
Supports Intel® Socket 478 Pentium® 4 (Northwood) 1.6GHz~3.20GHz+ with 400/533/800MHz Front Side Bus (FSB) designed for
Socket 478 technology.
Chipset
Intel 865 chipset is a Graphics Memory Controller Hub (GMCH) designed for use with the Pentium 4 processor with 512-KB L2 cache on
0.13-micron processor. It provides CPU, DDR, AGP, Hub, CSA Interfaces and integrated graphics with display interfaces. The CPU
interface supports Pentium 4 processor subset of the Extended Mode of the Scalable Bus Protocol. The GMCH memory interface
supports one up to two channels of DDR (for 865G and 865PE chipsets), and the AGP interface supports 0.8/1.5V signaling with 8X/4X
data transfers and 8X/4X AGP Fast Writes. The integrated graphics controller provides 3D, 2D, and display capabilities while using a
portion of system memory for graphics memory (UMA) to provide a cost effective, high performance graphics solution. The Intel 865
platform supports the fifth generation I/O Controller Hub.
The ICH5 integrates an Ultra ATA 100 controller, two Serial ATA host controllers, one EHCI host controller and four UHCI host controllers
supporting eight external USB 2.0 ports, LPC interface controller; flash BIOS interface controller, PCI interface controller, AC’97 digital
controller, integrated LAN controller, an ASF controller and a hub interface for communication with the 865 GMCH.
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Memory
With Intel 865G/865PE chipset, this motherboard can support dual channel Double-Data-Rate (DDR) SDRAM (for AX4SG and AX4SPE
series). 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. For AX4SPB series, it only has two RAM slots and support maximum up to 2GB in Single Channel
mode.
Expansion Slots
Including five 32-bit/33MHz PCI and one AGP 8X/4X slots. 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. AOpen i865 Family
motherboard includes one AGP expansion slot for a bus mastering AGP graphic card. The Accelerated Graphics Port (AGP)
specification provides a new level of video display sophistication and speed. The AGP video cards support data transfer rate up to
2112MB/s. For AX4SG series, you may have ADD card cabled to this AGP slot to provide high-speed digital connection for digital
displays.
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.
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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 100~400MHz by 1MHz stepping adjustment, and helps your system get maximum performance.
LAN Port (for –UL and –UN series)
On the strength of Gigabit LAN controller (-UL series) or Realtek 10/100 Mbps LAN controller (-UN series) on board, this motherboard
provides 10/100 Mbps Ethernet (for –UL series, it is 10/100/1000 Mbps) for office and home use. For –U series motherboard, it does not
support LAN onboard.
Ultra DMA 33/66/100 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 33/66/100, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices.
Serial ATA
Integrated in ICH5 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. The ICH5 SATA interface supports data transfer rates up to
150MB/s.
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On-board AC’97 Sound
AOpen i865 Family motherboard uses RealTek AC’97 CODEC Realtek ALC655 chip. This on-board audio includes a complete audio
recording and playback system.
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.
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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.
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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Realtek Gigabit LAN chip
Realtek 10/100 Mbps LAN chip
32-bit PCI Expansion Slots x5
USB 2.0 Connectors x 2
JP14 CMOS Clear Jumper
ATA 66/100 IDE Connectors x2
(for -UL series)
(for -UN series)
4Mb Flash ROM BIOS
Onboard AC’97 CODEC
Front Audio Connector
COM2 Connector
Game Port Connector
IrDA Connector
S/PDIF Connector
AUX-IN Connector
CD-IN Connector
Case Open Connector
SYSFAN2 Connector
SATA Ports x 2
Front Panel Connector
FDD Connector
Motherboard Map
18
Colored Back Panel
JP28 Keyboard/Mouse
Wakeup Jumper
ATX Power Connector
4-pin 12V. ATX Power Connector
Low ESR Capacitors
Connector SYSFAN1
AGP Protection LED
478-pin CPU socket (Northwood)
with Voltage and Frequency
Auto-detection that supports Intel
Pentium® 4 1.6~3.20GHz+ CPU
CPUFAN Connector
Intel 865G/865PE/848P Chipset that
supports 400/533/800MHz FSB,
DDR 266/333/400 and AGP 8X
184-pin DIMMsx4 support Dual Channel
DDR400/333/266 Max. To 4 GB
(for AX4SG and AX4SPE series)
184-pin DIMMx2 support Single Channel
DDR400/333/266 Max. To 2GB
(for AX4SPB serie s)
AGP 8X Expansion Slot
(for AX4SG series, it also supports
ADD card.)
®
AAOOppeenn ii886655 FFaammiillyy MMootthheerrbbooaarrddss OOnnlliinnee MMaannuuaal
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BBlloocckk DDiiaaggrraamm
DDR400/333/266 Dual Channel
RAM Up to 4GB
Socket 478
Intel Pentium 4
CPU
AGP 8X Slot
Support ADD Card
(for AX4SG series)
VGA onboard
(for AX4SG series)
LAN connect Component
For AX4SPB series, it only has two slots and
support 2GB maximum in Single Channel
DIMM Sockets x4
400/533/800MHz
System Bus
AGP bus
Intel
865 chipset
Gigabit LAN Chip
(-UL series)
Realtek
10/100Mbps
(-UN series)
USB Ports x8
Floppy Disk Drive
PCI Bus
Serial ATA Por ts x2
USB Port
USB Port
USB Port
USB Port
32-bit PCI Slots x5
150MB/s
ATA
33/66/100
SATA 1
SATA 2
Primar y
Channel
Secondary
Channel
ICH5
RealTek
AC97
CODEC
4Mbit Flash EEPROM
Parallel Po rt
Serial Ports x2
IDE D rives x4
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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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iillyy MMootthheerrbbooaarrddss OOnnlliinnee MMaannuuaal
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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
Sky Blue: AGP Slot
Flame Red:
Both 4-pin and 12-pin
ATX connector
Electric Blue:
Memory Module
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aarrddss OOnnlliinnee MMaannuuaal
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1
Power Switch
IDE LED
SPEAKER
Note: Colors setting varies on different motherboards; the color setting here applies only to AOpen i865 Family Motherboards.
ACPI & Power LED
RESET
Claret: Serial ATA connector
Navy Blue: IDE 1 Connector
Black: IDE 2 Connector
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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 pin1 & pin2.
5. Connect ATX power cable back to connector PWR2.
1
Normal
default
Pin 1
1
Clear CMOS
Tip: When should I Clear CMOS?
1. Boot fails because of overclocking…
2. Forget password…
3. Troubleshooting…
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CCPPUU IInnssttaallllaattiionn
This motherboard supports Intel® Pentium 4 Socket 478 series CPU (Northwood). Be careful of CPU orientation when you plug it into
CPU socket.
1. Pull up the CPU socket lever and
up to 90-degree angle.
o
2. Locate Pin 1 in the socket and look for mark on the CPU upper interface.
Match Pin 1 and cut edge, then insert the CPU into the socket.
Note: 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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AAOOppe
3. Press down the CPU socket lever and finish CPU
Note: This picture is for example only; it may not look the same with the motherboard you purchased.
e
installation.
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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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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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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.
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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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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.
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Backup by EEPROM
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