Jetway S450R2A User Manual
S450/S450L
USER'S MANUAL
M/B For Socket 478 Pentium 4 Processor
Trademark:
NO. G03-S450R2A
Release date: December 2001
* Specificati ons and Information contained in thi s documentation are furnished for information use only, and are
subject to change at any time without notice, and should not be construed as a commitment by manufacturer.
TABLE OF CONTENT
USER’S NOTICE..............................................................................ii
MANUAL REVISION INFORMATION .............................................1
COOLING SOLUTIONS..................................................................1
CH AP TER 1 INTRODUCTION OF S450/S450L MOTHERBOARD
1-1 FEATURE OF MOTHERBOARD............................................................... 2
1-2 SPECIFICATION..........................................................................................3
1-3 PERFORMANCE LIST ................................................................................ 4
1-4 LAYOUT DIAGRAM & JUMPER SETTING...........................................5
CHAPTER 2 HARDWARE INSTALLATION
2-1 HARDWARE INSTALLATION STEPS..................................................... 7
2-2 CHECKING MOTHERBOARD'S JUMPER SETTING ..........................7
2-3 INSTALL CPU ...............................................................................................8
2-3-1 GLOSSARY ........................................................................................8
2-3-2 ABOUT INTEL PENTIUM 4 478-PIN CPU....................................9
2-4 INSTALL MEMORY .................................................................................... 9
2-5 EXPANSION CARD......................................................................................10
2-5-1 PROCEDURE FOR EXPANSION CARD INSTALLATION..................10
2-5-2 ASSIGNING IRQ FOR EXPANSION CARD............................................
2-5-3 INTERRUPT REQUEST TABLE FOR THIS MOTHERBOARD..........
2-5-4 AGP SLOT .....................................................................................................
2-6 CONNECTORS, HEADERS ........................................................................12
2-6-1 CONNECTORS .............................................................................................
2-6-2 HEADERS......................................................................................................15
2-7 STARTING UP YOUR COMPUTER..........................................................18
10
11
11
12
CHAPTER 3 INTRODUCING BIOS
3-1 ENTERING SETUP.......................................................................................19
3-2 GETTING HELP............................................................................................20
3-3 THE MAIN MENU ........................................................................................20
3-4 STANDARD CMOS FEATURES.................................................................21
3-5 ADVANCED BIOS FEATURES ..................................................................23
3-6 ADVANCED CHIPSET FEATURES ..........................................................25
3-6-1 DRAM TIMING SETTINGS............................................................25
3-6-2 AGP FUNCTION SETTINGS.......................................................... 26
3-7 INTEGRATED PERIPHERALS..................................................................26
3-7-1 ONCHIP IDE FUNCTION................................................................27
3-7-2 ONCHIP DEVICE FUNCTION.......................................................28
3-7-3 ONCHIP SUPER IO FUNCTION.................................................... 29
3-8 POWER MANAGEMENT SETUP..............................................................30
3-8-1 PM WAKE UP EVENTS.................................................................. 31
3-9 PNP/PCI CONFIGURATION SETUP.........................................................32
i
3-9-1 IRQ RESOURCES ............................................................................ 33
3-10 PC HEALTH STATUS.................................................................................33
3-11 MISCELLANEOUS CONTROL ................................................................ 34
3-12 LOAD STANDARD/OPTIMIZED DEFAULTS .......................................35
3-13 SET SUPERVISOR/USER PASSWORD...................................................35
CHAPTER 4 DRIVER & FREE PROGRAM INSTALLATION
MAGIC INSTALL SUPPORTS WINDOWS 95/98/98SE/NT4.0/2000 .............36
4-1 AGPVXD
4-2 VGA
4-3 SOUND
4-4 LAN
4-5 PC-HEALTH
4-6 MAGIC BIOS
4-7 PC-CILLIN
INSTALL SIS AGPVXD DRIVER
INSTALL SIS 650 VGA DRIVER
INSTALL ALC201 AUDIO CO DEC DRIVER
INSTALL SIS 900 PCI FAST ETHERNET DRIVER
(ONLY FOR S450L)
WINBOND HARDWARE DOCTOR MONITORING SOFTWARE
INSTALL BIOS LIVE UPDATE UTILITY
INSTALL PC-CILLIN2000 ANTI-VIRUS PROGRAM
4-8 HOW TO DISABLE ON-BOARD SOUND.................................................45
4-9 HOW TO UPDATE BIOS.............................................................................45
...........................................37
...........................................38
.........................39
...............40
41
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USER’S NOTICE
COPYRIGHT OF THIS MANUAL BELONGS TO THE MANUFACTURER. NO PART OF THIS
MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT MAY BE
REPRODUCED, TRANSMITTED OR TRANSLATED INTO ANY LANGUAGE IN ANY FORM
OR BY ANY MEANS WITHOUT WRITTEN PERMISSION OF THE MANUFACTURER.
THIS MANUAL CONTAINS ALL INFORMATION REQUIRED TO USE S450/S450L MOTHERBOARD AND WE DO ASSURE THIS MANUAL MEETS USER’S REQUIREMENT BUT WILL
CHANGE, CORRECT ANY TIME WITHOUT NOTICE. MANUFACTURER PROVIDES THIS
MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, AND WILL NOT BE LIABLE FOR
ANY INDIRECT, SPECIAL, INCIDENTIAL OR CONSEQUENTIAL DAMAGES (INCLUDING
DAMANGES FOR LOSS OF PROFIT, LOSS OF BUSINESS, LOSS OF USE OF DATA,
INTERRUPTION OF BUSINESS AND THE LIKE).
PRODUCTS AND CORPORATE NAMES APPEARING IN THIS MANUAL MAY OR MAY
NOT BE REGISTERED TRADEMARKS OR COPYRIGHTS OF THEIR RESPECTIVE
COMPANIES, AND THEY ARE USED ONLY FOR IDENTIFICATION OR EXPLANATION
AND TO THE OWNER’S BENEFIT, WITHOUT INTENT TO INFRINGE.
ii
Manual Revision Information
Reversion Revision History Date
2.0 Second Edition December 2001
Item Checklist
5 S450/S450L motherboard
5 Cable for IDE/Floppy
5 Cable for VGA Connector
5 CD for motherboard utilities
□
Cable for USB Port 3/4, 5/6 (Option)
5 S450/S450L User’s Manual
Intel Pentium 4 Processor Family
Cooling Solutions
As processor technology pushes to faster speeds and higher performance, thermal
management becomes increasingly crucial when building computer systems.
Maintaining the proper thermal environment is key to reliable, long-term system
operation. The overall goal in providing the proper thermal environment is keeping the
processor below its specified maximum case temperature. Heatsinks induce improved
processor heat dissipation through increased surface area and concentrated airflow
from attached fans. In addition, interface materials allow effective transfers of heat
from the processor to the heatsink. For optimum heat transfer, Intel recommends the
use of thermal grease and mounting clips to attach the heatsink to the processor.
When selecting a thermal solution for your system, please refer to the website below
for collection of heatsinks evaluated and recommended by Intel for use with Intel
processors. Note, those heatsinks are recommended for maintaining the specified
Maximum T case requirement. In addition, this collection is not intended to be a
comprehensive listing of all heatsinks that support Intel processors.
For vendor list of heatsink and fan, please visit :
http://developer.intel.com/design/Pentium4/components/index
1
Chapter 1
Introduction of S450/S450L Motherboard
1-1 Feature of motherboard
The S450/S450L motherboard is design for use Intel Pentium 4 Processor in 478 Pin Package
Processor with the SiS 650 Chipset delivers a high performance and professional desktop
platform solution. Which utilize the Socket 478 design and the memory size expandable to
2.0GB.
These motherboards use the newest SiS 650 Chipset Supports 400MHz System Bus in data
transfer rate and 100MHz/133MHz clock frequency, support DDR200/ DDR266 DDR
SDRAM Module. And use SiS 961 MuTIOL Media IO supports 533MB/s transfer data
from/to sub-system to/from the Muti-threaded I/O Link Encoder/Decoder in SiS 961.
These motherboards offer ULTRA ATA
to provide speedier HDD throughout that boosts
100
overall system performance.
The S450L motherboard including LAN controller support 10/100 Mb/sec BASE T
transfer rate Ethernet.
These motherboards also has an integrated AC’97 2.1 CODEC on board which is fully
compatible with Sound Blaster Pro that gives you the best sound quality and compatibility.
The S450/S450L integrated High Performance & High Quality 3D Accelerator supports UltraAGPII with 2GB/s bandwidth, built-in MPEG-2/1 Video Decoder and Video Accelerator
supports VCD.DVD HDTV decoding and playback, supports graphic and video overlay
function. Built-in programmable 24-bit true-color RAMDAC up to 333MHz pixel clock.
Programmable frame buffer size from 8MB and up to 64MB. For those wanting even greater
graphic performance, an AGP 4X slot is included on the board, support AGP 2X/4X
capability and Fast write Transaction.
With USB control as well as capability of expanding to 6 USB function ports delivering
2x12Mb/s bandwidth and rich connectivity, the S450/S450L meet future USB demand also
this motherboard has built-in hardware monitor function to monitor and protect your computer.
These motherboards also
integrated Recovery Genius in BI OS
to protect your hard disk from
virus infect hard disk data.
A useful software tool “Magic BIOS” examines the BIOS version automatically with the
correct version available on the web, links the site for users to download the latest version of
BIOS and updates the BIOS. Use “Magic BIOS”, users can download and update BIOS
automatically and completed under the OS easily.
S450/S450L provides high performance & meets future specification demand. It is really wise
choice for your computer.
2
1-2 Specification
Spec Description
Micro ATX form factor 4 layers PCB size: 22x24.4cm
∗
Design
Chipset
CPU Socket
(mPGA478B Socket)
Memory Socket
Expansion Slot &
Headers
Integrate IDE
LAN
(Only for S450L)
Audio
BIOS
Multi I/O
SiS 650 North Bridge Chipset
∗
SiS 961 MuTIOL Media I/O Chipset
∗
Support Intel Pentium 4 478 Pin package utilizes Flip-
∗
Chip Pin Grid Array (FC-PGA2) package processor
Support 1.5G∼2.2G 478 Pin Pentium 4 processor
∗
Reserves support for future Intel Pentium 4 processors
∗
184-pin DDR SDRAM module socket x2
∗
Support 2 pcs DDR200/DDR266 DDR SDRAM Modules
∗
Expandable to 2.0GB
∗
AGP slot x1 support AGP 2.0 & 4X mode
∗
32-bit PCI slot x3
∗
CNR slot x1
∗
Two PCI IDE controllers support PCI Bus Mastering, ATA
∗
PIO/DMA and the ULTRA DMA 33/66/100 functions that
deliver the data transfer rate up to 100 MB/s
SiS On-chip LAN controller
∗
Support full duplex 10/100 Base-T Ethernet
∗
AC’97 Digital Audio controller integrated
∗
AC’97 Audio CODEC on board
∗
Audio driver and utility included
∗
Award 2Mb Flash ROM
∗
PS/2 keyboard and PS/2 mouse connectors
∗
Floppy disk drive connector x1
∗
Parallel port x1
∗
Serial port x2
∗
USB connector x2
∗
USB headers x4 (connecting cable option)
∗
Audio connector (Line-in, Line-out , MIC & Game Port)
∗
3
1-3 Performance List
The following performance data list is the testing result of some popular benchmark
testing programs. These data are just referred by users, and there is no responsibility
for different testing data values gotten by users (the different Hardware & Software
configuration will result in different benchmark testing results.)
Performance Test Report
CPU:
DRAM:
VGA Expansion Card:
Hard Disk Driver:
BIOS:
Win 98SE
OS:
Intel Pentium 4 1.9GHz mPGAB package
256MB DDR266 x1 (MICRON 46V16M8-6)
NVDIA Geforce2 MX-200 32MB (1024x768xHi-color)
IBM DTLA-305040 (ATA-100)
Award Optimal default
Performance Test Report
DDR266
On Board VGA
Share 32MB
3D Mark 2000 3297 2918
3D Mark 2001 1407 1201
3D Winbench 2000 51.8 55.3
Final Reality 10.59 9.63
Content Creation Winstone 2000 41.1 42.7
Content Creation Winstone 2001 51.8 51.9
Business Winstone2001 41.4 43.7
Winbench 99:
CPU Mark 99 107 110
FPU Winmark 99 6590 6580
Business Disk Winmark99 5090 7020
Hi-end Disk Winmark99 17000 21600
Business Graphic Winmark 383 402
Hi-end Graphic Winmark 1160 1250
SYS Mark 2000/2001 : SISMark 2000/2001 Rating (Internet Content Creation /
Office Productivity)
SISMark 2000 201 (220/188) 208 (224/196)
SISMark 2001 147 (167/129) 147 (167/129)
SISOFT Sandra 2001 :
Dhrystone ALU MIPS 3625 3627
Whetstone FPU MFLOPS 1142/2363 1140/2359
Int ALU/RAM MB/S 929 880
Float FPU/RAM MB/S 944 905
Integer SSE2 IT/S 7543 7536
Floating-Point SSE2 IT/S 9322 9314
QUAKE3 DEMO1 FPS 71.0 115.0
DEMO2 FPS 68.0 116.0
WCPUID System/CPU Clock 100.67/1912.80 100.67/1912.81
DDR266
Geforce MX200
32MB
4
1-4 Layout Diagram & Jumper Setting
PS/2 MOUSE
PRINT GAME/MIDI PORTLAN
PS/2 Keyboard
USB
ATX 12V Power Conn.
K/B Power ON
Jumper (JP10)
PS2 KB/Mouse Port
USB Port
/LAN Connector
(for S450L)
PC99 Back Panel
System FAN1
Front Panel Audio
CD Audio
COM1 COM2
MIC
LINE-IN
LINE-OUT
CPU Socket
CPU FAN
DDR SDRAM
DIMM X2
ATX Power Conn.
ATX P9 Power Conn.
SiS 650 Chip
VGA Connector
ATA 100 IDE Conn.
AGP Slot
PCI Slot
CIR Connector
ITE 8705 Chip
CNR Slot
USB1 Port
Wake On LAN
2MBit Flash ROM BIOS
5
Floppy Connector
SiS 961 Chip
Front Panel Connector
IR Connector
System FAN2
Clear CMOS (JP6)
USB2 Port
Jumpers
Jumper Name Description Page
JP6 CMOS RAM Clear 3-pin Block P.7
JP10 Keyboard Power On Enable/Disabled 3-pin Block P.8
Connectors
Connector Name Description Page
ATXPWR ATX Power Connector 20-pin Block P.12
ATX12V ATX 12V Power Connector 4-pin Block P.12
ATXP9 ATX P9 Power Connector 6-pin Block P.12
KB/MS PS/2 Mouse & PS/2 Keyboard
Connector
CN4 USB Port Connector 4-pin Connector P.13
CN2 LAN Port Connector RJ-45 Connector (for S450L) P.13
PRINT Parallel Port Connector 25-pin Female P.13
GAME Audio/Game Connector 3 phone jack + 15-pin Connector P.13
COM1/COM2 Serial Port COM1/2 Connector 9-pin Connector P.13
FDD Floppy Driver Connector 34-pin Block P.13
IDE1/IDE2 Primary/Secondary IDE Connector 40-pin Block P.14
6-pin Female P.13
Headers
Header Name Description Page
VGA VGA Connector 2x8-pin Block P.15
AUDIO SPEAKER, MIC header 9-pin Block P.15
USB1/USB2 USB Port Headers 9-pin Block P.15
HD-LED IDE activity LED 2-pin Block P.15
RESET Reset switch lead 2-pin Block P.16
SPEAK PC Speaker connector 4-pin Block P.16
PWR-LED Power LED 2-pin Block P.16
PWR-BTN Power switch 2-pin Block P.16
WOL Wake On-LAN Headers 3-pin Block P.16
SFAN1, SFAN2,
CPUFAN
IR IR infrared module Headers 5-pin Block P.17
CD_IN CD Audio-In Headers 4-pin Block P.17
Expansion Sockets
Socket/Slot Name Description Page
ZIF Socket 478 Pin CPU Socket 478-pin mPGA CPU Socket P.9
D I M M 1 , D I M M 2 SDRAM Module
PCI1 ∼ PCI3
AGP AGP 4X Mode Slot AGP Expansion Slot P.11
CNR CNR Slot Communication Network Riser Slot
FAN Headers 3-pin Block P.16
Socket
184-pin DDR SDRAM Module
Expansion Socket
P.10
PCI Slot 32-bit PCI Local Bus Expansion slots P.11
6
Chapter 2
Hardware installation
2-1 Hardware installation Steps
Before using your computer, you had better complete the following steps:
1. Check motherboard jumper setting
2. Install CPU and Fan
3. Install System Memory (DIMM)
4. Install Expansion cards
5. Connect IDE and Floppy cables, Front Panel /Back Panel cable
6. Connect ATX Power cable
7. Power-On and Load Standard Default
8. Reboot
9. Install Operating System
10. Install Driver and Utility
2-2 Checking Motherboard’s Jumper Setting
(1) CMOS RAM Clear (3-pin) : JP6
A battery must be used to retain the motherboard configuration in CMOS RAM short 2-3
pins of JP6 to store the CMOS data.
To clear the CMOS, follow the procedure below:
1. Turn off the system and unplug the AC power
2. Remove ATX power cable from ATX power connector
3. Locate JP6 and short pins 1-2 for a few seconds
4. Return JP6 to its normal setting by shorting pins 2-3
5. Connect ATX power cable back to ATX power connector
Note: When should clear CMOS
1. Troubleshooting
2. Forget password
3. After over clocking system boot fail
13
JP6
1-2 closed Clear CMOS
CMOS RAM Clear Setting
13
JP6
2-3 closed Normal (Default)
(2) Keyboard Power On function Enabled/Disabled: JP10
When setting Enabled you can using keyboard by key in password to power on system.
7
JP10
(Default)
13
2-3 closed K/B Power ON Enabled1-2 closed K/B Power ON Disable
Keyboard Power On Setting
13
JP10
2-3 Install CPU
2-3-1 Glossary
Chipset (or core logic) - two or more integrated circuits which cont rol th e int erfaces between
the system processor, RAM, I/O devises, and adapter cards.
Processor slot/socket - the slot or socket used to mount the system processor on the
motherboard.
Slot (AGP, PCI, ISA, RAM) - the slots used to mount adapter cards and system RAM.
AGP - Accelerated Graphics Port - a high speed interface for video cards; runs at 1X
(66MHz), 2X (133MHz), or 4X (266MHz).
PCI - Peripheral Component Interconnect - a high speed interface for video cards, sound
cards, network interface cards, and modems; runs at 33MHz.
ISA - Industry Standard Architecture - a relatively low speed interface primarily used for
sound cards and modems; runs at approx. 8MHz.
Serial Port - a low speed interface typically used for mouse and external modems.
Parallel Port - a low speed interface typically used for printers.
PS/2 - a low speed interface used for mouse and keyboards.
USB - Universal Serial Bus - a medium speed interface typically used for mouse, keyboards,
scanners, scanners, and some digital cameras.
Sound (interface) - the interface between the sound card or integrated sound connectors and
speakers, MIC, game controllers, and MIDI sound devices.
LAN (interface) - Local Area Network - the interface to your local area network.
BIOS (Basic Input/Output System) - the program logic used to boot up a computer and
establish the relationship between the various components.
Driver - software, which defines the characteri stics of a device for use by another device or
other software.
Processor - the "central processing unit" (CPU); the principal integrated circuit used for doing
the "computing" in "personal computer"
Front Side Bus Frequency -
the working frequency of the motherboard, which is generated
by the clock generator for CPU, DRAM and PCI BUS.
CPU L2 Cache -
the flash memory inside the CPU, normal it depend on CPU type.
8
2-3-2 About Intel Pentium 4 478-pin CPU
This motherboard provides a 478-pin surface mount, Zero Insertion Force (ZIF) socket,
referred to as the mPGA478B socket supports Intel Pentium 4 processor in the 478 Pin
package utilizes Flip-Chip Pin Grid Array (FC-PGA2) package technology.
The CPU that comes with the motherboard should have a cooling FAN attached to prevent
overheating. If this is not the case, then purchase a correct cooling FAN before you turn on
your system.
WARNING!
Be sure that there is sufficient air circulation across the processor’s
heatsink and CPU cooling FAN is working correctly, otherwise it may
cause the processor and motherboard overheat and damage, you may install
an auxiliary cooling FAN, if necessary.
To install a CPU, first turn off your system and remove its cover. Locate the ZIF socket and
open it by first pulling the level sideways away from the socket then upward to a 90-degree
angle. Insert the CPU with the correct orientation as shown below. The notched corner
should point toward the end of the level. Because the CPU has a corner pin for two of the
four corners, the CPU will only fit in the orientation as shown.
mPGA478B
CPU ZIF mPGAB Socket
Colden Arrow
When you put the CPU into the ZIF socket. No force require to insert of the CPU, t hen press
the level to Locate position slightly without any extra force.
2-4 Install Memory
This motherboard provides two 184-pin DUAL INLINE MEMORY MODULES (DIMM)
sites for DDR memory expansion available from minimum memory size of 64MB to
maximum memory size of 2.0GB DDR SDRAM.
Valid Memory Configurations
Bank 184-Pin DIMM Total Memory
Bank 0, 1 (DDR1) DDR200/DDR266
DDR SDRAM Module
Bank 2, 3 (DDR2) DDR200/DDR266
DDR SDRAM Module
Total System Memory (Max. 2.0GB) 2 64MB∼2.0GB
9
X1 64MB∼1.0GB
X1 64MB∼1.0GB
Generally, installing DDR SDRAM modules to your motherboard is very easy, you can refer
to figure 2-4 to see what a 184-Pin DDR SDRAM module looks like.
DDR2 (BANK2+ BANK3)
DDR1 (BANK0+ BANK1)
Figure 2-4
NOTE!
When you install DIMM module fully into the DIMM socket the eject tab
should be locked into the DIMM module very firmly and fit into its
indention on both sides.
WARNING!
For the DDR SDRAM CLOCK is set at 133MHz, use only DDR266compliant DDR Modules. When this motherboard operate at 133Mhz, most
system will not even boot if non-compliant modules are used because of the
strict timing issues, if your DDR Modules are not DDR266-compliant, set
the SDRAM clock to 100MHz to ensure system stability.
2-5 Expansion Cards
WARNING!
2-5-1 Procedure For Expansion Card Installation
1. Read the documentation for your expansion card and make any necessary hardware or
software setting for your expansion card such as jumpers.
2. Remove your computer’s cover and the bracket plate on the slot you intend to use.
3. Align the card’s connectors and press firmly.
4. Secure the card on the slot with the screen you remove above.
5. Replace the computer system’s cover.
6. Set up the BIOS if necessary.
7. Install the necessary software driver for your expansion card.
Turn off your power when adding or removing expansion cards or other
system components. Failure to do so may cause severe damage to both
your motherboard and expansion cards.
2-5-2 Assigning IRQs For Expansion Card
Some expansion cards need an IRQ to operate. Generally, an IRQ must exclusively
assign to one use. In a standard design, there are 16 IRQs available but most of them
are already in use.
10
Standard Interrupt Assignments
IRQ Priority Standard function
0 N/A System Timer
1 N/A Keyboard Controller
2 N/A Programmable Interrupt
3 * 8 Communications Port (COM2)
4 * 9 Communications Port (COM1)
5 * 6 Sound Card (sometimes LPT2)
6 * 11 Floppy Disk Controller
7 * 7 Printer Port (LPT1)
8 N/A System CMOS/Real Time Clock
9 * 10 ACPI Mode when enabled
10 * 3 IRQ Holder for PCI Steering
11 * 2 IRQ Holder for PCI Steering
12 * 4 PS/2 Compatible Mouse Port
13 N/A Numeric Data Processor
14 * 5 Primary IDE Channel
15 * 1 Secondary IDE Channel
* These IRQs are usually available for ISA or PCI devices.
2-5-3 Interrupt Request Table For This Motherboard
Interrupt request are shared as shown the table below:
INT A INT B INT C INT D INT E INT F INT G INT H
Slot 1
Slot 2
Slot 3
Onboard USB 1
Onboard USB 2
AC97/MC97
LAN
IMPORTANT!
If using PCI cards on shared slots, make sure that the drivers support
“S ha re d IRQ” or that the cards don’t need IRQ as si g nm en t s. Co nf l ic t s will
arise between the two PCI groups that will make the system unstable or
cards inoperable.
√
√
√
√
√
√
√
2-5-4 AGP Slot
This motherboard provides an AGP Slot, support the 2X/4X AGP VGA card.
2x notch 4x notch
AGP SLOT
11
2-6 Connectors, Headers
2-6-1 Connectors
(1) Power Connector (20-pin block) : ATXPWR
ATX Power Supply connector. This is a new defined 20-pins connector that usually
comes with ATX case. The ATX Power Supply allows to use soft power on momentary
switch that connect from the front panel switch to 2-pins Power On jumper pole on the
motherboard. When the power switch on the back of the ATX power supply turned on,
the full power will not come into the system board until the front panel switch is
momentarily pressed. Press this switch again will turn off the power to the system
board.
Pin 1
PIN ROW2 ROW1
1 3.3V 3.3V
2 -12V 3.3V
3 GND GND
4 Soft Power On 5V
5 GND GND
6 GND 5V
7 GND GND
8 -5V Power OK
9 +5V +5V (for Soft Logic)
10 +5V +12V
(2) ATX 12V Power Connector (4-pin block) : ATX12V
This is a new defined 4-pins connector that usually comes with ATX Power Supply. The
ATX Power Supply which fully support Pentium 4 processor must including this
connector for support extra 12V voltage to maintain system power consumption.
Without this connector might cause system unstable because the power supply can not
provide sufficient current for system.
Pin 1
(3) ATX P9 Power Connector (6-pin block) : ATXP9
This is a new defined 6-pins connector that usually comes with ATX Power Supply. The
ATX Power Supply which fully support Pentium 4 processor must including this
connector for support extra 3.3V and 5V voltage to maintain system power consumption.
Without this connector might cause system unstable because the power supply can not
provide sufficient current for system.
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