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