GIGA-BYTE TECHNOLOGY CO., LTD.

GA-686LX4 (VER. 1.0)

Device Type

Mainboard

Processor

Pentium II

Processor Speed

200/233/266/300/333/366MHz

Chip Set

Intel 440LX

Maximum Onboard Memory

1GB (EDO & SDRAM supported)

Cache

256/512KB (located on Pentium II CPU)

BIOS

Award

Dimensions

305mm x 180mm

I/O Options

32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector, AGP slot

CONNECTIONS

Purpose

Location

Purpose

Location

AGP slot

AGP

Serial port 1

CN2

ATX power connector

ATX

Serial port 2

CN3

Speaker

C1

USB connector 1

CN4

Reset switch

C2

USB connector 2

CN5

Power LED

C3

PS/2 mouse port

CN6

IDE interface LED

C4

IDE interface 2

CN7

IR connector

C5

IDE interface 1

CN8

Green PC connector

C6

Floppy drive interface

CN9

Soft off power supply

C7

CPU fan power

J1

Parallel port

CN1

32-bit PCI slots

PC1 - PC4

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

ATX power supply select soft off

J16

Open

 

ATX power supply select full on

J16

Closed

Keyboard power on disabled

JP1

Pins 2 & 3 closed

 

Keyboard power on enabled

JP1

Pins 1 & 2 closed

DIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

8MB

(1) 1M x 64

None

None

None

16MB

(1) 2M x 64

None

None

None

16MB

(1) 1M x 64

(1) 1M x 64

None

None

24MB

(1) 2M x 64

(1) 1M x 64

None

None

24MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

None

32MB

(1) 4M x 64

None

None

None

32MB

(1) 2M x 64

(1) 2M x 64

None

None

32MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

40MB

(1) 4M x 64

(1) 1M x 64

None

None

48MB

(1) 4M x 64

(1) 2M x 64

None

None

48MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

None

64MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

64MB

(1) 8M x 64

None

None

None

64MB

(1) 4M x 64

(1) 4M x 64

None

None

72MB

(1) 8M x 64

(1) 1M x 64

None

None

80MB

(1) 8M x 64

(1) 2M x 64

None

None

96MB

(1) 8M x 64

(1) 4M x 64

None

None

96MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

None

128MB

(1) 16M x 64

None

None

None

128MB

(1) 8M x 64

(1) 8M x 64

None

None

128MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

136MB

(1) 16M x 64

(1) 1M x 64

None

None

DIMM CONFIGURATION (CON'T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

144MB

(1) 16M x 64

(1) 2M x 64

None

None

176MB

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

192MB

(1) 16M x 64

(1) 8M x 64

None

None

192MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

None

256MB

(1) 32M x 64

None

None

None

256MB

(1) 16M x 64

(1) 16M x 64

None

None

256MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

272MB

(1) 16M x 64

(1) 16M x 64

(1) 1M x 64

(1) 1M x 64

280MB

(1) 32M x 64

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

288MB

(1) 16M x 64

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

320MB

(1) 16M x 64

(1) 16M x 64

(1) 4M x 64

(1) 4M x 64

384MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

None

448MB

(1) 32M x 64

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

512MB

(1) 32M x 64

(1) 32M x 64

None

None

512MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

640MB

(1) 32M x 64

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

768MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

None

1024MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

Note: Board accepts EDO & SDRAM memory. Maximum SDRAM is 512MB. Maximum EDO is 1024MB.

CACHE CONFIGURATION

Note: 256KB/512KB cache is located on the Pentium II CPU.

CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

JP2

JP3

JP4

200MHz

66MHz

3x

1 & 2

1 & 2

1 & 2

233MHz

66MHz

3.5x

1 & 2

1 & 2

1 & 2

266MHz

66MHz

4x

1 & 2

1 & 2

1 & 2

300MHz

66MHz

4.5x

1 & 2

1 & 2

1 & 2

333MHz

66MHz

5x

1 & 2

1 & 2

1 & 2

366MHz

66MHz

5.5x

1 & 2

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (CON'T)

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

200MHz

66MHz

3x

On

Off

On

On

233MHz

66MHz

3.5x

Off

Off

On

On

266MHz

66MHz

4x

On

On

Off

On

300MHz

66MHz

4.5x

Off

On

Off

On

333MHz

66MHz

5x

On

Off

Off

On

366MHz

66MHz

5.5x

Off

Off

Off

On