Gigabyte 686BX Manuale utente

R-01-01-080319

686BX

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 720 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. Modem Ring-On. (COM B)

5. Wake-Up on LAN. (on J13)

6. Supports LDCM®

Pentium



II Processor MAINBOARD

REV. 1.0 First Edition

Release Date 98.03.19

686BX

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.

March 19, 1998 Taipei, Taiwan

Quick Installation Guide

I. Quick Installation Guide :

CPU SPEED SETUP

The system bus speed is selectable between 66.6MHz and 100 MHz. The

user can select the system bus speed (JP6) and change the DIP SWITCH

(SW) selection to set up the CPU speed for 200 - 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.

CLK RATIO SW 1 SW 2 SW 3 SW 4

X3 ON OFF ON ON

X3.5 OFF OFF ON ON

X4 ON ON OFF ON

X4.5 OFF ON OFF ON

X5 ON OFF OFF ON

X5.5 OFF OFF OFF ON

JP6

1-2 CLOSE : System Speed is set to 66 MHz

2-3 CLOSE : Reserved (For Future use only!)

1-2-3 OPEN : System Speed is set to 100MHz

686BX

I. Set system speed to 66MHz: JP6 pin 1-2 short will cause

system always run at 66 MHz FSB (Front Side Bus).

II. Set system speed to 100MHz: JP6 pin 1-2-3 open will cause

system always run at 100MHz FSB.

III. Function for future use: Please don’t short this pins right now!

1. PentiumII 300 / 100MHz FSB

JP6 1

PIIX4

82443BX

43 2 1

JP6

3 2 1

JP6 3 2 1

Quick Installation Guide

2. PentiumII 350 / 100MHz FSB

3. PentiumII 400 / 100MHz FSB

4. PentiumII 450 / 100MHz FSB

5. PentiumII 233 MHz / 66MHz FSB

4 3 2 1

JP6

3 2 1

686BX

6. PentiumII 266 / 66MHz FSB

7. PentiumII 300 MHz / 66MHz FSB

II. Jumper setting :

SPK : Speaker Connector

PIIX4

82443BX

JP6

SPK

PIN FUNCTION

1VCC

2NC

3NC

4Data

RST : Reset Switch

4 3 2 1

4 3 2

JP6

3 2 1

Quick Installation Guide

PIIX4

82443BX

JP6

RST Open: Normal Close: Reset System

PW LED : Power LED Connector

PIIX4

82443BX

JP6

Power LED

PIN FUNCTION

1LED (+)

2NC

3LED (-)

HD : IDE Hard Disk Active LED

686BX

PIIX4

82443BX

JP6

PIN FUNCTION

1LED (+)

2LED (-)

HD LED

IR : Infrared Connector (Optional)

PIIX4

82443BX

JP6

PIN FUNCTION

1IR Data Output

2GND 1

IR Connector

3IR Data Input

4Signal

5POWER (+)

GN : Green Function Switch

Quick Installation Guide

PIIX4

82443BX

JP6

GN Open: Normal Close: Enter Green Mode

Soft POWER : Soft Power Connector

PIIX4

82443BX

JP6

Soft Power

POWER1 : Power Connector

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