SOYO 5ehm User manual

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5EH5/5EHM
586 CPU Supported PCI Mainboard
User’s Guide & Technical Reference

ii
®
C
C
F
Tested To Comply
With FCC Standards
FOR HOME OR OFFICE US
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™
About This Guide
This UserÕs Guide is for assisting system manufacturers and end users in setting
up and installing the mainboard. Information in this guide has been carefully
checked for reliability; however, no guarantee is given as to the correctness of the
contents. The information in this document is subject to change without notice.
Copyright Notice
Copyright 1997, Soyo Computer Inc. All rights reserved. This manual is
copyrighted by Soyo Computer Inc. You may not reproduce, transmit, transcribe,
store in a retrieval system, or translate into any language, in any form or by any
means, electronic, mechanical, magnetic, optical, chemical, manual, or otherwise,
any part of this publication without express written permission of Soyo Computer
Inc.
Trademarks
Soyo is a registered trademark of Soyo Computer Inc. All trademarks are the
property of their owners.
Disclaimer
Soyo Computer Inc. makes no representations or warranties regarding the
contents of this manual. We reserve the right to revise the manual or make
changes in the specifications of the product described within it at any time
without notice and without obligation to notify any person of such revision or
change. The information contained in this manual is provided for general use by
our customers. Our customers should be aware that the personal computer field is
the subject of many patents. Our customers should ensure that they take
appropriate action so that their use of our products does not infringe upon any
patents. It is the policy of Soyo Computer Inc. to respect the valid patent rights of
third parties and not to infringe upon or assist others to infringe upon such rights.
Restricted Rights Legend
Use, duplication, or disclosure by the Government is subject to restrictions set
forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer
Software clause at 252.277-7013.
Product Rights
Product mentioned in this manual are mentioned for identification purpose only.
Product names appearing in this manual may or may not be registered trademarks
or copyrights of their respective companies.
If you need any further information, please come to our home page on internet.
The address is Òhttp://www.soyo.com.twÓ.
Edition: February 1998
Version 1.0
5EH5/5EHM SERIAL

Table of Contents
Chapter 1: Introduction..................................................1
Key Features...............................................................................1
Unpacking the Mainboard...........................................................2
Electrostatic Discharge Precautions............................................2
Mainboard Layout w/ Default Settings.......................................3
Chapter 2: Hardware Setup............................................5
Jumpers.......................................................................................5
JP5: CMOS Clear Jumper....................................................5
JP22: CPU Burst Mode Jumper...........................................6
JP4: Smart Detect CPU Voltage Auto/Manual Jumper.......6
JP2, JP6: Power Supply Selection Jumpers.........................7
JP37: DIMM Voltage Jumper..............................................7
JP7, JP8 : Host Bus Frequency Selection Jumper................7
JP9, JP10: SDRAM Frequency Selection Jumper...............8
JP30: Voltage Jumper Settings.............................................8
CPU Type Configuration............................................................9
P54C/P55C Series CPUs Settings.........................................9
P54C/P55C Series CPUs Settings (Continued)...................10
AMD K5/K6 Series CPUs Setting......................................11
Cyrix 6x86/L/MX Series CPUs Setting..............................12
Memory Configuration.............................................................13
Memory Configuration Table..............................................13
Cache Configuration.................................................................13
Cache Size and RAM Locations.........................................13
Multi I/O Port Addresses..........................................................14
Connectors................................................................................14
J25 Ð Front Panel Connectors..............................................14
HD LED Ð IDE Device LED Connector.............................15
KB_LOCK Ð Keylock & Power LED Connector...............15
RESET Ð Hardware Reset Switch Connector.....................15
SPEAKER Ð PC Speaker Connector...................................15
TB LED Ð Turbo LED Connector.......................................15
PW2 Ñ ATX Power Supply On/Off Switch Connector
(Momentary Type)...............................................................15
COM1/COM2 Ð COM1/COM2 Serial Port Connectors.....15
PRT Ð Parallel Port Connector............................................15
JP44 Ð Wake-On-LAN (WOL) Header...............................15
PS1 Ð PS/2 Mouse Connector.............................................16
USB1 Ð USB Ports Connectors...........................................16
AT PWR (CN1)Ð AT Power Supply Connectors................17
IDE1/IDE2 Ð Primary/Secondary IDE Device Connectors.17

iv
ATX PWR (P1)Ð ATX Power Supply Connector ............... 17
JP12 Ð CPU Cooling Fan Connector ................................... 18
IR Ð Infrared Device Connector .......................................... 18
Chapter 3: BIOS Setup.................................................. 19
Standard CMOS Setup .............................................................. 20
BIOS Features Setup ................................................................. 22
Chipset Features Setup.............................................................. 25
Power Management Setup ........................................................ 27
PNP/PCI Configuration Setup .................................................. 30
Load Setup Defaults.................................................................. 32
Load BIOS Defaults.................................................................. 32
Integrated Peripherals ............................................................... 33
Supervisor Password ................................................................. 36
User Password ........................................................................... 37
IDE HDD Auto Detection ......................................................... 38
Quick Installation Guide ................................................ 39
Motherboard Layout............................................................ 39
Memory Configurations ...................................................... 40
Connectors and Jumper Settings ......................................... 40
Jumper Settings for CPU Voltage & Frequency ................. 40

1 Introduction
The EQ82C663X PCI mainboard is a high-performance AT form-factor
system board that supports P54C/P55C family CPUs. This mainboard is
fully compatible with industry standards and adds many technical
enhancements.
Key Features
¥ CPU
Ñ Supports P54C/P55C family CPUs running at 90~233 MHz
speeds; Cyrix 6x86/6x86L/6x86MX CPUs running at
PR150~PR266 speeds; and AMD K5/K6 CPUs running at
PR90~PR233 and K6 3D speeds
Ñ Supports Socket 7 for upgrade
Ñ Supports P54C/P55C series SMM Mode and CPU Stop Clock
Ñ Supports MMX technology and Smart Detect CPU Voltage
function
¥ Supports CPU overheat alarm function (70¡C)
¥ L2 Cache Controller
Ñ On-board 512K/1M Pipeline Burst SRAMs Cache
¥ DRAM Controller
Ñ Supports 2 strips of 72-pin FPM/EDO (4/8/16/32MB) SIMM
(symmetrical/ asymmetrical addressing)
Ñ Supports 2 strips of 168-pin FPM/EDO/SDRAM (8/16/32/64/128
MB) 3.3V Unbuffered DIMM
Ñ Memory configuration for DIMM is from 8MB to 256 MB; for
SIMM is from 8MB to 64MB
¥ BUS Controller
Ñ Complies to PCI specifications v2.1
Ñ Three 32-bit PCI slots, three ISA slots, and one AGP slot
¥ Peripheral Controller
Ñ System BIOS built-in NCR810 SCSI Card BIOS and ÒPlug and
PlayÓ function
Ñ Onboard PCI Master IDE controller and floppy controller
Ñ Onboard super I./O chip supports two high speed UARTS (w/i
16550 FIFO), one ECP/EPP/SPP multi-mode parallel port, and
one PS/2 mouse port
Ñ Onboard FLASH Memory for easy upgrade BIOS
Ñ Easy installation of ETEQ E-IDE/ATAPI Bus Master Drivers
included on CD
Ñ Supports IR connector
ÑSupports Universal Serial Bus (USB)
Ñ AT/ATX power suply connectors available.

2Introduction
Unpacking the Mainboard
The mainboard package contains:
¥ The EQ82C663X Mainboard
¥ One CD (including UserÕs Manual, Drivers, and Utilities)
Note: Do not unpack the mainboard until you are ready to install it.
Follow the precautions below while unpacking the mainboard.
1. Before handling the mainboard, ground yourself by grasping an
unpainted portion of the systemÕs metal chassis.
2. Remove the mainboard from its anti-static packaging and place it on
a grounded surface, component side up.
3. Check the mainboard for damage. If any chip appears loose, press
carefully to seat it firmly in its socket.
Do not apply power if the mainboard appears damaged. If there is
damage to the board contact your dealer immediately.
Electrostatic Discharge Precautions
Make sure you ground yourself before handling the mainboard or other
system components. Electrostatic discharge can easily damage the
components. Note that you must take special precaution when handling
the mainboard in dry or air-conditioned environments.
Take these precautions to protect your equipment from electrostatic
discharge:
¥ Do not remove the anti-static packaging until you are ready to install
the mainboard and other system components.
¥ Ground yourself before removing any system component from its
protective anti-static packaging. To ground yourself grasp the
expansion slot covers or other unpainted portions of the computer
chassis.
¥ Frequently ground yourself while working, or use a grounding strap.
¥ Handle the mainboard by the edges and avoid touching its
components.

Introduction 3
Mainboard Layout w/ Default Settings
22
78
5
20 4
19 18 17
13
11
14
14
16 15
9
10
6
3
3
1
1212
21
Figure 1Ð1. Mainboard Layout
1. ZIF socket 7 12. IDE1/IDE2 Connectors
2. EQ82C663X Chipset 13. Parallel Port Connector
3. Pipelined Burst SRAM 14. COM1/COM2 Connector
4. Super I/O 15. ATX Power Connector
5. PnP FLASH BIOS 16. AT Power Connector
6. TAG SRAM 17. KB Connector
7. ISA Slots 18. PS/2 Mouse Connector
8. PCI Slots 19. USB Connectors
9. Unbuffered DIMM Banks 20. 3 Volt. Lithium Battery
10. SIMM Banks 21. AGP Port
11. Floppy Connector

4Introduction
Default settings are as follows: Pentium 133MHz CPU, 512K Pipelined
Burst cache, On-board PCI E-IDE Enabled, 2 high speed UARTS
Enabled (w/ 16550 FIFO), 1 EPP/ECP port (ECP + EPP mode), 5V
SIMM/3.3V DIMM, and AT power supply.
USB1
1
#1#2#3
ISA SLOT
#1#2#3
PCI SLOT
AGP PORT
IDE1 IDE2
FDCPRT
COM2 COM1
SMC
37C669
3V
Lithium
Battery
Flash BIOS
ATX PWR
K/B
Conn.
PS/2
Conn.
#1#2
SIMM SLOT
#1#2
DIMM SLOT
TAG 16kx8
1
3
5
JP37
SW1
654231
ON
P.B. SRAM
64Kx64
P.B. SRAM
64Kx64
EQ82C
6638AT
EQ82C6629
1
2
3
JP5
IR1
Socket 7
(for 586 CPUs)
SPK
RST PW2
HDD
LED
Turbo
LED
J25
JP30
1357911
JP4
JP12
+–
Power
LED
Keylock
* If the board is
5EHM (1M Cache)
then it should have
two P.B. SRAM.
(Optional)
1
1
2
3
JP44
AT PWR
1
2
3
JP22
3
2
1
3
2
1
JP2
JP6
1
1
2
3
JP7
1
2
3
JP8
1
2
3
JP9
123
JP10
Figure 1Ð2. Regular Mainboard Default Setting
Note: Make sure the system is well ventilated to prevent overheating
and ensure system stability.

2 Hardware Setup
This chapter explains how to configure the mainboardÕs hardware. After
you install the mainboard, you can set jumpers, install memory on the
mainboard, and make case connections. Refer to this chapter whenever
you upgrade or reconfigure your system.
CAUTION:Turn off power to the mainboard, system chassis, and
peripheral devices before performing any work on the
mainboard or system.
Jumpers
This mainboard uses different colors of jumper caps to identify different
functions of the jumpers:
Jumper
Cap Color White Black Blue Red Green Yellow
Function clear
CMOS
CPU
burst
mode
Power
supply
selection
Smart
Detect
CPU
voltage
DIMM
voltage
CPU
Voltage
Host Bus
& SDRAM
Frequency
JP5: CMOS Clear Jumper
Clear the CMOS memory by momentarily shorting pin 2Ð3; then
shorting pin 1Ð2 to retain new settings.
CMOS Setting JP5
Retain CMOS data
(default)
1
2
3
Clear CMOS data
1
2
3

6Hardware Setup
JP22: CPU Burst Mode Jumper
Due to different designs, there are two kinds of CPU burst modes:
Interleave Burst and Linear Burst. Select the correct mode according to
the CPU you are using.
CPU Burst Mode JP22
Interleave
(for P54C/P55C and AMD
K5/K6 CPU)
1
2
3
Linear
(for Cyrix 6x86/L/MX CPU)
1
2
3
When using a Cyrix series of CPUs, follow the below procedures after
select the burst mode:
1. Press<Delete> key to enter the BIOS setup menu during the boot-up,
2. Select ÒChipset Features SetupÓ,
3. Set the ÒLinear BurstÓ to ÒEnabledÓ,
4. Press <Esc> to go back to the main menu and choose ÒSave & Exit
SetupÓ to reboot your computer.
JP4: Smart Detect CPU Voltage Auto/Manual Jumper
For P54C/P55C and Cyrix 6x86/L CPUs, this board automatically
detects and adjusts the CPU voltage to the proper voltage. JP4 is
reserved for a few older non-Intel CPUs which can not be detect
correctly. If you run into problems while detecting the voltage of older
CPUs, remove the jumper cap to correct it.

Hardware Setup 7
JP2, JP6: Power Supply Selection Jumpers
These two jumpers let you select either the AT or the ATX power
supply. Use only one power supply at a time on this mainboard.
JP2 JP6
AT Power Supply
(default)
321
321
ATX Power Supply
321
321
JP37: DIMM Voltage Jumper
There are two kinds of DIMM voltages in the marketÑ3.3V and 5VÑ
and most of SDRAM DIMMS are 3.3V. Choose the correct voltage
according to the DIMM that you are using.
DIMM Voltage JP37 Setting
3.3V
(default)
2
4
6
1
3
5
5V
2
4
6
1
3
5
Caution: Do not change this jumper to 5V setting unless you are
sure that your DIMMs are 5V. The wrong setting may
cause the system malfunction.
JP7, JP8 : Host Bus Frequency Selection Jumper
JP7 JP8 CPU Host Bus
Frequency AGP Host Bus Frequency PCI Host Bus Frequency
321
(default)
321
(default)
66 66 33
321 321
100 66 33

8Hardware Setup
JP9, JP10: SDRAM Frequency Selection Jumper
JP9
321
(default)
SDRAM frequency is the same as CPU
frequency (60/66/75/83/100 MHz)
321
SDRAM frequency is the same as AGP
frequency (66 MHz)
JP10
321
(default)
SDRAM is running at CPU frequency
321
SDRAM is running at AGP frequency
Note:1. The host bus frequency can not be set to 75 MHz when using
a AGP card.
2. Use 8ns SDRAM or faster (for PC100) when using a host bus
frequency of 100MHz. However, this limitation does not
apply to EDO modules.
3. When the SDRAM module is slower than 8ns, JP9 and JP10
must be set to AGP frequency.
JP30: Voltage Jumper Settings
1 3 5 7 9 11
2.0V
1357911
2.4V
1 3 5 7 9 11
2.8V
1 3 5 7 9 11
3.2V
1 3 5 7 9 11
2.1V
1357911
2.5V
1 3 5 7 9 11
2.9V
1 3 5 7 9 11
3.3V
1 3 5 7 9 11
2.2V
1357911
2.6V
1357911
3.0V
1357911
3.4V
1357911
2.3V
1357911
2.7V
1357911
3.1V
1 3 5 7 9 11
3.5V

Hardware Setup 9
CPU Type Configuration
SW1 and JP30 are the only switchs/jumpers that you need to set for your
CPU on this mainboard. Make sure that you know the type of CPU that
you are installing and refer to the proper settings which are listed below.
If you have a higher frequency CPU then the one listed below, see the
ÒQuick Installation GuideÓ for more SW1 information.
SW1: Frequency Setting. Some newer CPUs may not be included in
this section, please refer to the Appendix for more information.
JP30: Voltage Setting. There are two kinds of CPU voltages
currently on the marketÑSingle and Dual. The CPUs which
fall under the single voltage category are: P54C, AMD-K5, and
Cyrix 6x86. The CPUs which fall under the dual voltage
category are: P55C, AMD-K6, and Cyrix 6x86L/MX. This
board is designed to detect the CPU voltage automatically for
P54C and P55C CPUs due to the Smart Detect CPU Voltage
function, and therefore, there is no need to move any jumpers to
set the voltage for P54C/P55C CPUs.
SW1
654231
ON
P.B. SRAM
64Kx64
P.B. SRAM
64Kx64
Socket 7
(for 586 CPUs)
JP30
1357911
Figure 2Ð1. Location of JP30 and SW1
P54C/P55C Series CPUs Settings
1
3
5
7
9
11
JP30
External• : 60MHz
Ratio• : 1.5x
P54CÐ90MHz
CPU Frequency Setting (SW1) Voltage Setting
(JP30)
External• : 66MHz
Ratio• : 1.5x
P54CÐ100MHz
Single Voltage
3.52V
(default)
123456
ON
123456
ON
JP7 JP8 JP9 JP10
2-3 open 2-3 1-2
(default)

10 Hardware Setup
P54C/P55C Series CPUs Settings (Continued)
123456
ON
External• : 60MHz
Ratio• : 2.0x
P54CÐ120MHz
123456
ON
External• : 66MHz
Ratio• : 2.0x
P54CÐ133MHz
(default)
External• : 60MHz
Ratio• : 2.5x
P54CÐ150MHz
External• : 66MHz
Ratio• : 2.5x
P54CÐ166MHz
External• : 60MHz
Ratio• : 3.0x
P54CÐ180MHz
External• : 66MHz
Ratio• : 3.0x
P54CÐ200MHz
Single Voltage
3.52V
(default)
External• : 66MHz
Ratio• : 2.5x
P55CÐ166MHz
(MMX)
CPU Frequency Setting (SW1) Voltage Setting
(JP30)
External• : 60MHz
Ratio• : 3.0x
P55CÐ180MHz
(MMX)
External• : 66MHz
Ratio• : 3.0x
P55CÐ200MHz
(MMX)
External• : 66MHz
Ratio• : 3.5x
P55CÐ233MHz
(MMX)
DualVoltage
2.8V
(default)
123456
ON
123456
ON
123456
ON
123456
ON
123456
ON
123456
ON
123456
ON
123456
ON
1
3
5
7
9
11
JP30
1
3
5
7
9
11
JP30
JP7 JP8 JP9 JP10
2-3 open 2-3 1-2
(default)
2-3 open 2-3 1-2
(default)
Note: 1. The voltage setting for 3.52V and 2.8V are the same due to
the Smart Detect CPU Voltage function.
2. When using SDRAM on Intel CPUs, you have to use either
8ns or 10ns SDRAMs.

Hardware Setup 11
AMD K5/K6 Series CPUs Setting
External• : 100MHz
Ratio• : 2.5x
AMD K6Ð3D*
123456
ON
Single Voltage
3.52V
(default)
External• : 60MHz
Ratio• : 1.5x
AMD K5ÐPR90
External• : 66MHz
Ratio• : 1.5x
AMD K5ÐPR100
External• : 60MHz
Ratio• : 1.5x
AMD K5ÐPR120
External• : 66MHz
Ratio• : 2.0x
AMD K5ÐPR133
External• : 66MHz
Ratio• : 2.5x
AMD K5ÐPR166
CPU Frequency Setting (SW1) Voltage Setting
(JP30)
External• : 66MHz
Ratio• : 2.5x
AMD K6ÐPR166
External• : 60MHz
Ratio• : 3.0x
AMD K6ÐPR180
AMD K6ÐPR200 External• : 66MHz
Ratio• : 3.0x
Dual Voltage
2.9V
Dual Voltage
2.2V
Dual Voltage
3.2V
123456
ON
123456
ON
123456
ON
123456
ON
123456
ON
123456
ON
123456
ON
123456
ON
External• : 66MHz
Ratio• : 3.5x
AMD K6ÐPR233
123456
ON
1
3
5
7
9
11
JP30
1
3
5
7
9
11
JP30
1
3
5
7
9
11
JP30
1
3
5
7
9
11
JP30
JP7 JP8 JP9 JP10
2-3 open 2-3 1-2
(default)
2-3 open 2-3 1-2
(default)
1-2 2-3
2-3
or
1-2
1-2
or
2-3
*: You need to use 8ns or faster SDRAMs and set JP9/JP10 to 2-3/1-2
when using K6-3D CPU.
Note: 1. When using SDRAM on all AMD CPUs, you need to use 8ns
or 10ns SDRAMs except K6-3D.
2. The voltage of AMD may vary from market to market. Please
ask your CPU provider for detail.

12 Hardware Setup
Cyrix 6x86/L/MX Series CPUs Setting
Cyrix 6x86/6x86L
ÐPR150
Cyrix 6x86/6x86L
ÐPR166
Cyrix 6x86/6x86L
ÐPR200
Cyrix 6x86MX
ÐPR166
Cyrix 6x86MX
ÐPR200
Cyrix 6x86MX
ÐPR233
Cyrix 6x86MX
ÐPR233
External• : 60MHz
Ratio• : 2.0x
CPU Frequency Setting (SW1)
Voltage Setting
(JP30)
External• : 66MHz
Ratio• : 2.0x
External• : 75MHz
Ratio• : 2.0x
Single
Voltage
3.52V
(default)
Dual
Voltage
2.8V
(default)
External• : 60MHz
Ratio• : 2.5x
External• : 66MHz
Ratio• : 2.5x
External• : 75MHz
Ratio• : 2.5x
External• : 66MHz
Ratio• : 3.0x
123456
ON
123456
ON
123456
ON
123456
ON
123456
ON
Cyrix 6x86MX
ÐPR200
External• : 75MHz
Ratio• : 2.0x
123456
ON
123456
ON
123456
ON
Cyrix 6x86MX
ÐPR266
External• : 83MHz
Ratio• : 2.5x
123456
ON
Dual Voltage
2.9V
1
3
5
7
9
11
JP30
1
3
5
7
9
11
JP30
1
3
5
7
9
11
JP30
JP7 JP8 JP9 JP10
2-3 open 2-3 1-2
(default)
2-3 open 2-3 1-2
(default)
1-2 2-3 2-3 1-2
Note: 1. There are two kinds of Cyrix MXÐPR200/PR233 CPUs as you
could see on the above list. Make sure the type of your CPU
first from your CPU provider and then set the SW1 and JP30.
2. The voltage setting for 3.52V and 2.8V are the same due to
the Smart Detect CPU Voltage technology.
3. The host bus frequency can not be set to 75 MHz when using
a AGP card.
4. When using SDRAM on Cyrix CPUs, you need to use 8ns or
10ns SDRAMs.

Hardware Setup 13
Memory Configuration
The mainboard supports two strips of 72-pin 5V FPM/EDO DRAM
(SIMM) from 4 to 32MB and two strips of 168-pin 3.3V/5V
Unbuffered DIMM modules from 8 to 128MB. The mainboard
requires SIMM modules of at least 70ns access time.
You can install memory in any combination without having to rely on a
memory configuration table. memory configuration is thus ÒTable-FreeÓ
in any memory bank. You must install two SIMM modules to complete
a bank.
Memory Configuration Table
DIMM Bank
SIMM Bank DIMM 1 DIMM 2
RAM Type FPM/EDO FPM/EDO/
SDRAM
FPM/EDO/
SDRAM
Single RAM
Module Size (MB) 4/8/16/32 8/16/32/64/128 8/16/32/64/128
Note: Do not install FPM or EDO SIMM/DIMM when you already
installed SDRAM type of DIMM.
Cache Configuration
The mainboard has a write-back caching scheme with built-in 512KB or
1MB Level 2 Pipelined Burst cache onboard to improve the system
performance.
Cache Size and RAM Locations
Cache Size Cache RAM TAG RAM Cacheable Range
512KB 64k x 64
U2
16K x 8
U3
64MB (1 dirty bit)
128MB (0 dirty bit)
1MB 64k x 64
U2, U4
16K x 8
U3
128MB (1 dirty bit)
256MB (0 dirty bit)

14 Hardware Setup
Multi I/O Port Addresses
Default settings for multi-I/O port addresses are shown in the table
below.
Port I/O Address IRQ Status
LPT1* 378H 7ECP + EPP
COM1 3F8H 4
COM2 2F8H 3
*If default I/O port addresses conflict with other I/O cards (e.g. sound
cards or I/O cards), you must adjust one of the I/O addresses to avoid
address conflict. (You can adjust these I/O addresses from the BIOS.)
Note: Some sound cards have a default IRQ setting for IRQ7, which
may conflict with printing functions. If this occurs do not use
sound card functions at the same time you print.
Connectors
Attach the mainboard to case devices via connectors on the mainboard.
Refer to Figure 1-1 for connector locations and connector pin positions.
J25 – Front Panel Connectors
This set of connectors includes: Keylock/Power LED connector,
Speaker connector, Reset Connector, PW2, and Turbo/HDD LED
Connector. The features of each of these connectors are explained
below.
J25 Pin Assignment
Reset Turbo
LED HDD LED
Keylock Speaker
PW2
+– +–+–
Power
LED

Hardware Setup 15
HD LED – IDE Device LED Connector
Attach a 2-pin IDE drive LED cable to this connector. The LED lights
when an IDE device is active.
KB_LOCK – Keylock & Power LED Connector
It is a 5-pin connector for a lock that may be installed on the system case
for enabling or disabling the keyboard. It also attaches to the caseÕs
Power LED. Pin 1, 3 are for power LED and pin 4, 5 are for keylock.
RESET – Hardware Reset Switch Connector
Attach 2-pin hardware reset switch to it. Closing the reset switch restarts
the system.
SPEAKER – PC Speaker Connector
Attach a 4-pin PC speaker cable from the case to this connector.
TB LED – Turbo LED Connector
Attach a 2-pin turbo LED cable to it. The LED lights when the system is
in turbo mode. Manufacture default has set the board in turbo mode due
to most of hardware and software are compliant with turbo mode.
PW2 — ATX Power Supply On/Off Switch Connector
(Momentary Type)
Attach a two-pin switch to this connector for turning the ATX power
supply on/off.
COM1/COM2 – COM1/COM2 Serial Port Connectors
Attach COM1/COM2 device cables to these connectors.
PRT – Parallel Port Connector
A 26-pin female connector is located at the rear of the board. Plug the
parallel port device cable into this connector.

16 Hardware Setup
JP44 – Wake-On-LAN (WOL) Header
Attach a 3-pin connector from the LAN card which supports the Wake-
On-LAN (WOL) function. This function lets users wake up the
connected computer through the LAN card. (The cable should be
included with the LAN card.)
JP44 Pin Assignment
5V
GND
SENSOR
1
2
3
PS1 – PS/2 Mouse Connector
Attach 6-pin male PS/2 mouse cable to this connector to enable PS/2
mouse function.
PS/2 Mouse Connector
Pin Assignment
GND DATA N/A Vcc
Clcok N/A
USB1 – USB Ports Connectors
Attach 9-pin USB cable to this connector for normal USB devices.