
GIGA-BYTE TECHNOLOGY CO., LTD.

GA-686DX

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 (5), floppy drive interface, green
                       PC connector, IDE interfaces (2), parallel port,
                       PS/2 mouse port, serial ports (2), IR connector, USB
                       connector, ATX power connector
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  ATX power connector         ATX       Reset switch               J2

  Serial port 1               CN1       Power LED                  J3

  Parallel port               CN2       IDE interface LED          J4

  Serial port 2               CN3       IR connector               J5

  PS/2 mouse port             CN4       Green PC connector         J6

  USB connector               CN5       Soft on power supply       J7
  (optional)

  IDE interface 1             CN6       Green PC LED               J8

  IDE interface 2             CN7       Chassis fan power         JP2

  Floppy drive interface      CN8       Chassis fan power         JP4

  Speaker                     J1        32-bit PCI slots        PC1  PC5

                      DRAM CONFIGURATION

      Size          Bank 0          Bank 1          Bank 2

      8MB         (2) 1M x 36        None            None

      16MB        (2) 1M x 36     (2) 1M x 36        None

      16MB        (2) 2M x 36        None            None

      24MB        (2) 2M x 36     (2) 1M x 36        None

      24MB        (2) 1M x 36     (2) 1M x 36    (2) 1M x 36

      32MB        (2) 4M x 36        None            None

      32MB        (2) 2M x 36     (2) 2M x 36        None

      40MB        (2) 4M x 36     (2) 1M x 36        None

      48MB        (2) 4M x 36     (2) 2M x 36        None

      48MB        (2) 4M x 36     (2) 1M x 36    (2) 1M x 36

      56MB        (2) 4M x 36     (2) 2M x 36    (2) 1M x 36

      64MB        (2) 8M x 36        None            None

      64MB        (2) 4M x 36     (2) 4M x 36        None

      80MB        (2) 8M x 36     (2) 2M x 36        None

      80MB        (2) 8M x 36     (2) 1M x 36    (2) 1M x 36

      88MB        (2) 8M x 36     (2) 2M x 36    (2) 1M x 36

      96MB        (2) 8M x 36     (2) 4M x 36        None

      96MB        (2) 4M x 36     (2) 4M x 36    (2) 4M x 36

      96MB        (2) 8M x 36     (2) 2M x 36    (2) 2M x 36

     104MB        (2) 8M x 36     (2) 4M x 36    (2) 1M x 36

     112MB        (2) 8M x 36     (2) 4M x 36    (2) 2M x 36

     128MB        (2) 8M x 36     (2) 4M x 36    (2) 4M x 36

     128MB       (2) 16M x 36        None            None

     128MB        (2) 8M x 36     (2) 8M x 36        None

     136MB        (2) 8M x 36     (2) 8M x 36    (2) 1M x 36

     136MB       (2) 16M x 36     (2) 1M x 36        None

     144MB       (2) 16M x 36     (2) 2M x 36        None

     144MB       (2) 16M x 36     (2) 1M x 36    (2) 1M x 36

     152MB       (2) 16M x 36     (2) 2M x 36    (2) 1M x 36

                  DRAM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1          Bank 2

     160MB       (2) 16M x 36     (2) 4M x 36        None

     160MB       (2) 16M x 36     (2) 2M x 36    (2) 2M x 36

     168MB       (2) 16M x 36     (2) 4M x 36    (2) 1M x 36

     176MB       (2) 16M x 36     (2) 4M x 36    (2) 2M x 36

     192MB       (2) 16M x 36     (2) 8M x 36        None

     192MB       (2) 16M x 36     (2) 4M x 36    (2) 4M x 36

     200MB       (2) 16M x 36     (2) 8M x 36    (2) 1M x 36

     208MB       (2) 16M x 36     (2) 8M x 36    (2) 2M x 36

     224MB       (2) 16M x 36     (2) 8M x 36    (2) 4M x 36

     256MB       (2) 16M x 36    (2) 16M x 36        None

     256MB       (2) 16M x 36     (2) 8M x 36    (2) 8M x 36

     256MB       (2) 32M x 36        None            None

     264MB       (2) 16M x 36    (2) 16M x 36    (2) 1M x 36

     264MB       (2) 32M x 36     (2) 1M x 36        None

     272MB       (2) 16M x 36    (2) 16M x 36    (2) 2M x 36

     272MB       (2) 32M x 36     (2) 2M x 36        None

     288MB       (2) 16M x 36    (2) 16M x 36    (2) 4M x 36

     288MB       (2) 32M x 36     (2) 4M x 36        None

     320MB       (2) 16M x 36    (2) 16M x 36    (2) 8M x 36

     320MB       (2) 32M x 36     (2) 8M x 36        None

     384MB       (2) 16M x 36    (2) 16M x 36    (2) 16M x 36

     384MB       (2) 32M x 36    (2) 16M x 36        None

     512MB       (2) 32M x 36    (2) 32M x 36        None

  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

