Gigabyte GA-686LX4 User Manual

686LX4

USER'S MANUAL

1. System power on by PS/2 Mouse: First, enable this function
in CMOS Setup, then you can power on the system by
double clicking the right or left button of your PS/2 Mouse.

2. System power on by Keyboard: If your ATX power supply
supports larger than 100~300 mA 5V Stand-By current
(dependent on the specification of keyboard), you can
power on your system by entering password from the
Keyboard after setting the “Keyboard power on” jumper
(JP1) and password in CMOS Setup.

3. Support 3 steps ACPI LED selectable.

4. Support Modem Ring-On on COM A , COM B.

5. Support Wake-up on LAN. (Your ATX power supply must
support larger than 720 mA 5V Stand-By current)

M J16(ATX PWR Ctrl)/J19(Ring Pow On)/JP8(Clear CMOS)

Power FAN/System FAN Jumpers for PCB Rev: 2.0/2.2 use,
please reference P15¡BP16¡BP17

M PCI 2.1 For PCB Rev 2.0
M PCI 2.2 For PCB Rev 2.2

For Intel Pentium II / CeleronTM Processor MAINBOARD

R-22-01-081103

REV. 2.2 First Edition

2

686LX4

The author assumes no responsibility for any errors or omissions that may
appear in this document nor does it make a commitment to update the
information contained herein.

Sound Blaster is a registered trademark of Creative Technology Ltd in the
United States and certain other countries. Sound Blaster-LINK and SB-LINK
are trademarks of Creative Technology Ltd.

Third-party brands and names are the property of their respective owners.

Dec 03, 1998 Taipei, Taiwan

1

Quick Installation Guide

I. Quick Installation Guide :
CPU SPEED SETUP

The default system bus speed is 66.6MHz. The user can change the DIP
SWITCH (SW) selection to set up the CPU speed for 233 - 633MHz
processor.

The CPU speed MUST match with the frequency RATIO. It will cause
system hanging up if the frequency RATIO is higher than that of CPU.

DIP SWITCH (SW)

1 2 3 4

OFF OFF ON ON 3.5 66 233

ON ON OFF ON 4 66 266

OFF ON OFF ON 4.5 66 300

ON OFF OFF ON 5 66 333

OFF OFF OFF ON 5.5 66 366

REQ.

RATIO

. MHz

. MHz

CPU Type

Pentium II 233 MHz
(Celeron 233MHz)

Pentium II 266 MHz
(Celeron 266MHz)

Pentium II 300 MHz
(Celeron 300MHz)

Pentium II 333 MHz
(Celeron 333MHz)

Pentium II 366 MHz
(Celeron 366MHz)

MJP2, JP3, JP4 (Select the system speed¡Ð66 / 75 / 83 / 100MHz )

Main Clock JP4 JP3 JP2

66 MHz 1-2 1-2 1-2
75 MHz 1-2 2-3 1-2
83 MHz 2-3 1-2 2-3

100 MHz 1-2 2-3 2-3

«

Note: We don’ t recommend you to setup your system speed to 75,

83 or 100MHz because these frequencies are not the standard
specifications for CPU, Chipset and most of the peripherals.
Whether your system can run under 75, 83 or 100MHz properly
will depend on your hardware configurations: CPU, SDRAM,
Cards, etc.

2

686LX4

686LX4

1. Pentium II / Celeron 233 MHz / 66MHz FSB

BIOS

INTEL
443LX

PIIX4

1234

ON

JP2
JP3
JP4

2. Pentium II / Celeron 266MHz / 66MHz FSB

4 3

SW

JP2
JP3

ON

JP4

3 2

3. Pentium II / Celeron 300MHz / Celeron 300A MHz / 66MHz

FSB

4 3

JP2
JP3

SW

ON

JP4

3 2

123

3

4. Pentium II / Celeron 333MHz / 66MHz FSB

Quick Installation Guide

4 3

JP2
JP3

SW

ON

JP4

3 2

5. Pentium II / Celeron 366 MHz / 66MHz FSB

4 3

JP2
JP3

SW

ON

JP4

3 2

4

686LX4

II. Jumper setting :

GN : Green Function Switch

BIOS

PIIX4

GD : Green Function LED

INTEL
443LX

Open:
Normal
operation

Short:
Green mode

1

PIIX4

BIOS

INTEL
443LX

PIN FUNCTION

1

1

LED (+)

2

LED (-)

5

HD : IDE Hard Disk Active LED

BIOS

PIIX4

INTEL

443LX

Quick Installation Guide

SPKR : Speaker Connector

BIOS

PIIX4

1

INTEL
443LX

1

PIN FUNCTION

1

LED (+)

2

LED (-)

PIN FUNCTION

1 VCC
2 NC
3 NC
4 Data

6

686LX4

RES : Reset Switch

BIOS

PIIX4

PWR : Power LED Connector

BIOS

INTEL
443LX

Open:
Normal
operation

Short:
Reset system

PIIX4

INTEL
443LX

1

PIN FUNCTION

1 LED (+)
2

LED (−)

3

LED (−)

7

PWR SW : Soft Power Connector

BIOS

PIIX4

INTEL
443LX

Quick Installation Guide

1

IR : Infrared Connector (Optional)

BIOS

PIIX4

1

PIN FUNCTION

1

CTRL-Signal

2 GND

INTEL

443LX

PIN NO. Function

1

IR Data Output
2
3
4
5

GND

IR Data Input

Signal

POWER (+)

8

686LX4

GND

VCC

ATX PWR : ATX Power Connector

BIOS

PIIX4

PS/2 Mouse / Keyboard Connector

BIOS

INTEL
443LX

Pin No.

3,5,7,13,15-17

4,6,19,20

10
12
18

8
9

14

11

1

Function

+12V

-12V

-5V
Power Good

5V SB
(Stand by +5V)

PS-ON
(Soft ON/OFF)

PS/2 Mouse

PIIX4

INTEL
443LX

PS/2 Keyboard

PS/2 Mouse/Keyboard

Pin No.

Function

1

Data

2

NC

3

GND

4

VCC (+5V)
5 Clock
6 NC

9

CPU FAN : CPU Cooling Fan Power Connector

BIOS

INTEL
443LX

PIIX4

IDE1: For Primary IDE port

BIOS

Quick Installation Guide

1

PIN FUNCTION

1 GND
2 +12V
3 SENSE

PIIX4

10

INTEL
443LX

RED LINE

1

686LX4

IDE2: For Secondary IDE port

BIOS

PIIX4

FLOPPY: FLOPPY PORT

BIOS

INTEL
443LX

RED LINE

1

PIIX4

11

INTEL
443LX

RED LINE

1

LPT PORT / COM A / COM B

Quick Installation Guide

BIOS

PIIX4

JP1: Keyboard Power On

BIOS

PIIX4

INTEL
443LX

INTEL
443LX

LPT PORT

COM B

COM A

Keyboard Power On
Default: Disable

1-2
2-3

1
2

3

Enable

Disable

12

686LX4

BIOS

CN1: USB Port

PIIX4

J13:Wake On LAN

1

BIOS

Pin No. Function

1 +5V SB
2 GND
3 Signal

INTEL
443LX

Pin No.

1
2

3
4
5
6
7
8

Function

USB V0
USB D0­USB D0+

GND
USB V1

USB D1­USB D1+

GND

PIIX4

13

INTEL
443LX

SB-LINK : For PCI Audio / Sound Card use only

–

(Creative PCI Sound Card Support)

Quick Installation Guide

BIOS

PIIX4

BAT1 : For Battery

BIOS

PIIX4

1 2

5 6

Pin No.

4

Function
1 Signal
2 GND
3 NC
4 Signal
5 GND
6 Signal

INTEL
443LX

INTEL

443LX

+

M Danger of explosion if battery is incorrectly replaced.
M Replace only with the same or equivalent type recommended by the

manufacturer.

M Dispose of used batteries according to the manufacturer’ s instructions.

14

686LX4

J16: ATX Power Control Selection (Only for PCB Rev:2.0 use)

BIOS

INTEL
443LX

PIIX4

J16

Open: Soft Off

Close: Full On

POWER FAN: Power Fan power connector (Only for PCB Rev:2.2
use)

BIOS

INTEL
443LX

PIIX4

15

1

PIN FUNCTION

1 GND
2 +12V
3 SENSE

SYSTEM FAN: System Fan power connector
(Only for PCB Rev:2.2 use)

BIOS

INTEL
443LX

PIIX4

1

JP8: CLEAR CMOS (Only for PCB Rev:2.2 use)

Quick Installation Guide

PIN FUNCTION

1 GND
2 +12V
3 SENSE

BIOS

PIIX4

1-2 Short :Clear CMOS

1

2-3 Short :Normal
Default: 2-3 Short

16

INTEL
443LX

686LX4

J19: Ring PWR ON(Only for PCB Rev:2.2 use)

BIOS

INTEL
443LX

PIIX4

1

J19

Pin No. Function

12+5V SB

GND

17

Quick Installation Guide

III. Top Performance Test Setting:

The following performance data list is the testing results of some popular
benchmark testing programs.

Users have to modify the value for each item in chipset features as follow
for top performance setting.

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686LX4

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.)

• CPU

• DRAM (32 x 2) MB SDRAM (LGS GM72V16821GT10K)

• CACHE SIZE 512 KB included in CPU

• DISPLAY 600 AGP Display Card (4MB SGRAM)

• STORAGE Onboard IDE (IBM DHEA-34330)

• O.S. Windows® 95 OSR2.1

• DRIVER Display Driver at 1024 x 768 x 64k colors x 75Hz.

Processor

Pentium II processor

Triones Bus Master IDE Driver 3.70

Intel Pentium II

266MHz 300MHz

Winbench97

CPU mark32 692 759

Business Disk 1940 2070

Hi-End Disk 5900 6210

Business Graphics 116 126

Hi-End Graphics 50.8 55.4

Winstone97

Business 62.1 64.8

Hi-End 30.7 32.1

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