GIGA-BYTE TECHNOLOGY CO., LTD.

GA-686NX

Processor

Pentium Pro

Processor Speed

150/166/180/200/233/266MHz

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

512MB (EDO supported)

Maximum Video Memory

None

Cache

256/512KB (located on Pentium Pro CPU)

BIOS

Award

Dimensions

305mm x 244mm

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, VRM connector, USB connector, ATX power connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

ATX power supply

ATX

Speaker

J2

Serial port 2

CN1

Reset switch

J3

Parallel port

CN2

Power LED

J4

PS/2 mouse port

CN4

IDE interface LED

J5

Serial port 1

CN5

IR connector

J6

USB connector

CN6

Green PC connector

J7

IDE interface 2

CN7

Soft on power supply

J8

IDE interface 1

CN8

Green PC LED

J9

Floppy drive interface

CN9

Chassis fan power

JP1

VRM connector

J1

32-bit PCI slots

PC1 – PC4

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

JP2

Unidentified

»

Factory configured - do not alter

JP4

Unidentified

DRAM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

24MB

(2) 2M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

40MB

(2) 4M x 36

(2) 1M x 36

48MB

(2) 4M x 36

(2) 2M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 8M x 36

(2) 1M x 36

80MB

(2) 8M x 36

(2) 2M x 36

96MB

(2) 8M x 36

(2) 4M x 36

128MB

(2) 8M x 36

(2) 8M x 36

128MB

(2) 16M x 36

None

136MB

(2) 16M x 36

(2) 1M x 36

144MB

(2) 16M x 36

(2) 2M x 36

160MB

(2) 16M x 36

(2) 4M x 36

192MB

(2) 16M x 36

(2) 8M x 36

256MB

(2) 16M x 36

(2) 16M x 36

256MB

(2) 32M x 36

None

264MB

(2) 32M x 36

(2) 1M x 36

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

272MB

(2) 32M x 36

(2) 2M x 36

288MB

(2) 32M x 36

(2) 4M x 36

320MB

(2) 32M x 36

(2) 8M x 36

384MB

(2) 32M x 36

(2) 16M x 36

512MB

(2) 32M x 36

(2) 32M x 36

Note: Board accepts EDO memory.

CACHE CONFIGURATION

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

CPU SPEED SELECTION

Speed

S1/1

S1/2

S1/3

S1/4

150MHz

On

On

Off

Off

166MHz

Off

On

Off

Off

180MHz

On

Off

On

Off

200MHz

Off

Off

On

Off

233MHz

Off

On

On

Off

266MHz

Off

Off

Off

On