Aopen MX4SG4DL User Manual
MMXX44SSGG--44DDLL // MMXX44SSGG--44DDNN // MMXX44SSPPBB--NN OOnnlliinnee MMaannuuaall
MX4SG-4DL / MX4SG-4DN / MX4SPB-N/
MX4SPB-N
DOC. NO.: MX4SG4DL-OL-E0311B
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WWhhaatt’’ss iinn tthhiiss mmaannuuaall
MX4SG-4DL / MX4SG-4DN / MX4SPB-N....................................................................................................................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
JP14 Clear CMOS Data .............................................................................................................................................................. 21
CPU Installation........................................................................................................................................................................... 22
CPU Fan Installation ................................................................................................................................................................... 24
CPU Over-current Protection ...................................................................................................................................................... 26
AOpen “Watch Dog ABS”............................................................................................................................................................ 28
Full-range Adjustable CPU Core Voltage.................................................................................................................................... 29
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CPU and System Fan Connector (with H/W Monitoring) ............................................................................................................ 31
JP28 Keyboard/Mouse Wake-up Jumper.................................................................................................................................... 32
DIMM Sockets ............................................................................................................................................................................. 33
AC Power Auto Recovery............................................................................................................................................................ 35
IDE and Floppy Connector .......................................................................................................................................................... 36
Serial ATA Supported .................................................................................................................................................................. 38
Connecting Serial ATA Disk......................................................................................................................................................... 39
Front Panel Connector ................................................................................................................................................................ 42
AGP (Accelerated Graphic Port) 8X Expansion Slot................................................................................................................... 43
AGP Protection Technology and AGP LED ................................................................................................................................. 44
IrDA Connector............................................................................................................................................................................ 45
Support 10/100/1000 Mbps LAN onboard................................................................................................................................... 46
Support USB 2.0 Ports ................................................................................................................................................................ 47
Color Coded Back Panel ............................................................................................................................................................. 48
S/PDIF (Sony/Philips Digital Interface) Connector...................................................................................................................... 49
Super 5.1 Channel Audio Effect .................................................................................................................................................. 50
Wake On Modem / Wake On LAN / Wake On PCI Card............................................................................................................. 51
Front Audio Connector ................................................................................................................................................................ 52
CD Audio Connector.................................................................................................................................................................... 53
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AUX-IN Connector....................................................................................................................................................................... 54
COM2 Connector ........................................................................................................................................................................ 55
Case Open Connector................................................................................................................................................................. 56
Resetable Fuse ........................................................................................................................................................................... 57
Enlarged Aluminum Heatsink ...................................................................................................................................................... 58
Low ESR Capacitor ..................................................................................................................................................................... 59
PBE – Performance Boosting Engine (for MX4SG-4DL / MX4SG-4DN) .................................................................................... 60
The noise is gone!! ---- SilentTek................................................................................................................................................. 61
Hyper Threading Technology ...................................................................................................................................................... 64
AOConfig Utility ........................................................................................................................................................................... 66
Phoenix-AWARD BIOS ........................................................................................................................ 68
How To Use Phoenix-Award™ BIOS Setup Program ................................................................................................................. 69
How To Enter BIOS Setup........................................................................................................................................................... 70
BIOS Upgrade under Windows environment .............................................................................................................................. 71
Vivid BIOS technology................................................................................................................................................................. 73
Driver and Utility – .............................................................................................................................74
Installing Drivers.......................................................................................................................................................................... 75
Installing Utilities.......................................................................................................................................................................... 76
Glossary .............................................................................................................................................77
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AC’97 CODEC............................................................................................................................................................................. 77
ACPI (Advanced Configuration & Power Interface)..................................................................................................................... 77
ACR (Advanced Communication Riser) ...................................................................................................................................... 77
AGP (Accelerated Graphic Port) ................................................................................................................................................. 78
AMR (Audio/Modem Riser) ......................................................................................................................................................... 78
ATA (AT Attachment) ................................................................................................................................................................... 78
BIOS (Basic Input/Output System).............................................................................................................................................. 79
Bluetooth ..................................................................................................................................................................................... 79
CNR (Communication and Networking Riser)............................................................................................................................. 80
DDR (Double Data Rate) SDRAM............................................................................................................................................... 80
ECC (Error Checking and Correction)......................................................................................................................................... 80
EEPROM (Electronic Erasable Programmable ROM) ................................................................................................................ 80
EPROM (Erasable Programmable ROM).................................................................................................................................... 81
EV6 Bus ...................................................................................................................................................................................... 81
FCC DoC (Declaration of Conformity)......................................................................................................................................... 81
FC-PGA (Flip Chip-Pin Grid Array).............................................................................................................................................. 81
FC-PGA2 (Flip Chip-Pin Grid Array)............................................................................................................................................ 81
Flash ROM .................................................................................................................................................................................. 82
Hyper Threading.......................................................................................................................................................................... 82
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IEEE 1394 ................................................................................................................................................................................... 82
Parity Bit ...................................................................................................................................................................................... 83
PCI (Peripheral Component Interface) Bus................................................................................................................................. 83
PDF Format................................................................................................................................................................................. 83
PnP (Plug and Play) .................................................................................................................................................................... 83
POST (Power-On Self Test) ........................................................................................................................................................ 84
PSB (Processor System Bus) Clock ........................................................................................................................................... 84
RDRAM (Rambus Dynamic Random Access Memory) .............................................................................................................. 84
RIMM (Rambus Inline Memory Module)...................................................................................................................................... 84
SDRAM (Synchronous DRAM) ................................................................................................................................................... 84
SATA (Serial ATA)........................................................................................................................................................................ 85
SMBus (System Management Bus) ............................................................................................................................................ 85
SPD (Serial Presence Detect)..................................................................................................................................................... 85
USB 2.0 (Universal Serial Bus) ................................................................................................................................................... 85
VCM (Virtual Channel Memory) .................................................................................................................................................. 86
Wireless LAN – 802.11b.............................................................................................................................................................. 86
ZIP file ......................................................................................................................................................................................... 86
Troubleshooting ................................................................................................................................. 87
Technical Support .............................................................................................................................. 91
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Product Registration.......................................................................................................................... 95
How to Contact Us............................................................................................................................. 96
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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 5.0 for online viewing, it is included in Bonus CD or you can get free download from Adobe
web site.
Although this Online Manual is optimized for screen viewing, it is still capable for hardcopy printing, you can print it by A4 paper size and
set 2 pages per A4 sheet on your printer. To do so, choose File > Page Setup and follow the instruction of your printer driver.
Thanks for the help of saving our earth.
, we
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OOvveerrvviieeww
Thank you for choosing AOpen MX4SG-4DL / MX4SG-4DN / MX4SPB-N motherboard. MX4SG-4DL / MX4SG-4DN is Intel® Socket 478
motherboard (M/B) based on the ATX form factor featuring the Intel 865G chipsets
high performance chipset built in the M/B, MX4SG-4DL / MX4SG-4DN / MX4SPB-N motherboard supports Intel
1.6GHz~3.20GHz. It supports 400/533/800MHz Front Side Bus (FSB
intelligence to systems. In the AGP
burst transfer up to 2112MB/sec. MX4SG-4DL / MX4SG-4DN
also supports ADD card. According to different customer’s
requirements, this motherboard supports DDR266
and DDR400
2GB only). The onboard IDE controller supports Ultra DMA
33/66/100 mode and Serial ATA 150 MB/s. A total of four USB
ports on the back panel and two headers on the board give
2.0
you the best use of all USB devices with the fancy speed up to
480Mbps. More than that, on the strength of integrated BCM
LAN controller on board, which is a highly integrated Platform
LAN Connect device, it provides 10/100 Mbps Ethernet (for
MX4SG-4DL, it is 10/100/1000 Mbps) for office and home use.
Besides, MX4SG-4DL / MX4SG-4DN / MX4SPB-N has S/PDIF
connector and an AC’97 CODEC RealTek ALC655
onboard, providing high performance and magic surround
stereo sound to let people enjoy working with it. Now, let’s enjoy
all features from AOpen MX4SG-4DL / MX4SG-4DN / MX4SPB-N motherboard.
performance, it has one AGP slot to support AGP 8X/4X mode and pipelined spilt-transaction long
, DDR333
RAM up to 4GB maximum (MX4SPB-N is up to
chipset
and MX4SPB-N is based on Intel 848PB chipsets. As
) clock and Hyper-Threading Technology that brings additional
®
Socket 478 Pentium® 4
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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 865G 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, 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 chipset, MX4SG-4DL / MX4SG-4DN can support dual channel Double-Data-Rate (DDR) RAM. 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.
MX4SPB-N supports single channel DDR RAM maximum up to 2GB only.
Expansion Slots
Including three 32-bit/33MHz PCI and one AGP 8X/4X slots. The PCI local bus throughput can be up to 132MB/s. Of three PCI slots
provided, all of them are master PCI slots with arbitration and decoding for all integrated functions and LPC bus. MX4SG-4DL /
MX4SG-4DN / MX4SPB-N motherboard includes one AGP expansion slot for a bus mastering AGP graphic card. The
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 MX4SG-4DL / MX4SG-4DN, you may have ADD card cabled to this AGP slot to provide high-speed
digital connection for digital displays.
Accelerated
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 100~255MHz by 1MHz stepping adjustment, and helps your system get maximum performance.
LAN Port
On the strength of Broadcom BCM5705 Gigabit LAN controller (MX4SG-4DL) or Broadcom BCM4401 LAN controller (MX4SG-4DN and
MX4SPB-N) on board, this motherboard provides 10/100 Mbps Ethernet (for MX4SG-4DL, it is 10/100/1000 Mbps) for office and home
use.
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
MX4SG-4DL / MX4SG-4DN / MX4SPB-N uses RealTek AC’97 CODEC RealTek ALC655 sound 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
Installing Operating System (such as Windows XP)
10.
Installing Driver and Utility
11.
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®
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Broadcom Gigabit LAN Chip (MX4SG-4DL)
Broadcom 10/100 Mbps LAN Chip
(MX4SG-4DN and MX4SPB-N)
AC’97 CODEC
Front Audio Connector
AUX-IN Connector
CD-IN Connector
S/PDIF Connector
32-bit PCI Expansion Slots x3
USB 2.0 Connectors x2
Support 150MB/s Transfer Rate
4 MB Flash ROM BIOS
IrDA Connector
Case Open Connector
SYSFAN2 Connector
STBY LED
Serial ATA Ports x2
Front Panel Connector
JP14 CMOS Clear Jumper
Motherboard Map
17
Colored Back Panel
Resetable Fuse
JP28 Keyboard/Mouse Wakeup Jumper
4-pin 12V. ATX Power Connector
SYSFAN1 Connector
COM2 connector
Low ESR Capacitor
AGP Protection LED
AGP 8X Expansion Slot
supports ADD card (for MX4SG-4DL &
MX4SG-4DN
478-pin CPU socke
with Voltage and Frequency
Auto-detection that supports Intel
Pentium® 4 1.6~3.20GHz+ CPU
CPUFAN connector
Intel
865G Chipsets (for MX4SG-4DL
& MX4SG-4DN)
®
Intel
848PB Chipsets (for MX4SPB-N)
184-pin DIMMx4 supports
128bit dual channel DDR400/333/266
Max. To 4GB (for MX4SG-4DL &
MX4SG-4DN)
184-pin DIMMx2 supports
128bit DDR400/333/266
Max. To 2GB
ATX Power Connector
FDD Connector
ATA 33/66/100 IDE Connectors x2
s
t (Northwood)
for MX4SPB-N)
®
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BBlloocckk DDiiaaggrraamm
Socket 478
Intel Pentium 4
CPU
AGP 8X Slot
Support ADD Card
(for MX4SG-4DL
and MX4SG-4DN)
VGA onboard (for MX4 SG-4DL
and MX4SG-4DN)
LAN connect Component
DDR400/333/266 Dual Channel RAM Up to
4GB(for MX4SG-4DL and MX4SG-4DN)
DDR400/333/266 Dual Channel RAM Up to
2GB(for MX4SPB-N)
DIMM Socket x4 (for MX4SG-4DL
and MX4SG-4DN)
DIMM Socket
400/533/800MHz
x2 (for MX4SPB-N)
System Bus
AGP bus
Gigabit B CM5705
(MX4SG-4DL)
(MX4SG-4DN and
MX4SPB-N)
Floppy Disk Drive x2
Intel 865G (for
MX4SG-4DL and
MX4SG-4DN)
Intel 848PB (for
MX4SPB-N)
or
BCM4401
USB Port x8
PCI Bus
Serial ATA Ports x2
USB Port
USB Port
USB Port
USB Port
32-bit PCI Slot x3
150MB/s
ATA
33/66/100
SATA 1
SATA 2
Primary
Channel
Secondary
Channel
ICH5
RealTek
AC97
CODEC
4Mbit Flash EEPROM
Parallel Port
Serial Port x2
IDE Drive 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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(
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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.
Pin 1
1
Normal
default
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
22
y
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.
SG
MMXX44S
installation.
G--44DDL
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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 correctly
to the four corners.
Note: The picture above may look different from the product you purchased.
2. Pressing down the four clips with force one by one
on the retention module.
Clip
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CCPPUU JJuummppeerr--lleessss DDeessiiggnn
CPU VID signal and SMbus clock generator provide CPU voltage auto-detection and allows the user to set the CPU frequency through
the BIOS setup, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less designs are
eliminated. There will be no worry of wrong CPU voltage detection.
CPU VID signal
(Automatically generates CPU voltage)
Intel® Socket 478
Power Regulator
Pentium 4
CPU voltage
Clock Generator
CPU Freq. Ratio
BIOS
Controlled
Circuit
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CCPPUU OOvveerr--ccuurrrreenntt PPrrootteeccttiioonn
The Over Current Protection is a popular implementation on ATX 3.3V/5V/12V switching power supply. However, the new generation
CPU uses different voltage with a regulator to transfer 12V to CPU voltage (for example, 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.
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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BBaatttteerryy--lleessss aanndd LLoonngg LLiiffee DDeessiiggn
This Motherboard implements a Flash ROM
CMOS Setup configurations. The RTC (real time clock) can also keep running as long as the power cord is plugged. If you lose your
CMOS data by accident, you can just reload the CMOS configurations from Flash ROM and the system will recover as usual.
and a special circuit that provide you no batter power consumption of current CPU and
ATX Stand-by Power
n
Battery
Flash ROM
(Real Time Clock)
Auto Switch
RTC
00:00:00
CMOS
Auto switch to ATX standby
power as long as AC power line
is plugged. This smart design
increases battery life if you still
plug battery on motherboard.
Backup by EEPROM
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to user’s settings stored in the BIOS. If system failed in BIOS POST, the “Watch Dog Timer” will reset the system to reboot in five
seconds. Then, BIOS will detect the CPU’s default frequency and POST again. With this special feature, you can easily overclock your
system to get a higher system performance without removing the system housing and save the hassle from setting the jumper to clear
CMOS data when system hangs.
AOpen
Watch Dog ABS
Enable/Disable Signal from
AOpen provides a special and useful feature on this motherboard for overclockers. When you
power-on the system, the BIOS will check last system POST
will enable “Watch Dog ABS” function immediately, and set the CPU FSB frequency according
BIOS
BIOS
Reset Signal
Clock Generator
Countdown about
5 seconds if fails
in POST
CPU
status. If it succeeded, the BIOS
CPU ID Signal
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This motherboard supports CPU VID function. The CPU core voltage will be automatically detected and the range is from 0.8375V to
1.6000V. It is not necessary to set CPU Core Voltage.
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BIOS Setup > Frequency/Voltage Control > CPU Bus Frequency
This motherboard is CPU jumper-less design, you can set CPU frequency in BIOS; no jumpers or switches are needed. The default
setting is "table select mode". You can adjust the FSB from "CPU Host/RAM/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 8x, 10x… 25x, 26x, 27x, 28x
CPU FSB (By BIOS table) 100-255MHz
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