Gigabyte 686LX3 User Manual

R-22-01-081015

686LX3

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.(Optional)

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

3. Supports 3 steps ACPI LED

4. WAKE-UP ON LAN. (The ATX power supply supports larger
than 720 mA 5V Stand-By current)

M J13.JP12.J6 Jumpers for PCB 2.0/2.2 use, please reference

P16¡BP17

Pentium II Processor MAINBOARD

Table of Contents

2

REV. 2.2 First Edition

686LX3

1

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.

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

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.

Quick Installation Guide

2

Oct 15, 1998 Taipei, Taiwan

I. Quick Installation Guide:

CPU SPEED SETUP

The default system bus speed is set to 66MHz. The user can change the DIP
SWITCH (SW) selection to set up the CPU speed for 200 - 366MHz processor.

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

DIP SWITCH (SW)

FREQ. RATIO

SW1 SW2 SW3 SW4

X 3

ON OFF ON ON

X 3.5

OFF OFF ON ON

X 4

ON ON OFF ON

X 4.5

OFF ON OFF ON

X 5

ON OFF OFF ON

X 5.5

OFF OFF OFF ON

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.

686LX3

3

1. Pentium II 200 MHz

686LX3

PIIX4

INTEL
440LX

ON

4 3 2 1

JP2
JP3
JP4

3 2 1

2. Pentium II 233 MHz

686LX3

PIIX4

INTEL
440LX

ON

4 3 2 1

JP2
JP3
JP4

3 2 1

Quick Installation Guide

4

3. Pentium II 266 MHz

686LX3

PIIX4

INTEL
440LX

ON

4 3 2 1

JP2
JP3
JP4

3 2 1

4. Pentium II 300 MHz

686LX3

PIIX4

INTEL
440LX

ON

4 3 2 1

JP2
JP3
JP4

3 2 1