
GIGA-BYTE TECHNOLOGY CO., LTD.

GA-686LX3 (VER. 2.2)

Device Type            Mainboard
Processor              Pentium II
Processor Speed        200/233/266/300/333/366MHz
Chip Set               Intel 440LX
Maximum Onboard Memory 768MB (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,
                       SB-link connector, wake on LAN connector, wake on
                       modem connector

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  AGP slot                 AGP         CPU fan power             J1

  ATX power                ATX         Wake on modem             J6
  connector                            connector

  Parallel port            CN1         Green PC LED          JP7/pins 1 &
                                                                 12

  Serial port 1            CN2         Reset switch          JP7/pins 3 &
                                                                  4

  Serial port 2            CN3         Speaker               JP7/pins 5 -
                                                                  8

  USB connector 1          CN4         IDE interface LED     JP7/pins 9 &
                                                                 20

  USB connector 2          CN5         Green PC connector   JP7/pins 11 &
                                                                 22

  PS/2 mouse port          CN6         Soft off power       JP7/pins 15 &
                                       supply                    16

  IDE interface 2          CN7         Power LED            JP7/pins 17 -
                                                                 19

  IDE interface 1          CN8         SB-link connector         JP9

  Floppy drive             CN9         Wake on LAN              JP10
  interface                            connector

  IR connector             IR1         32-bit PCI slots       PC1 - PC4

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Keyboard power on disabled              JP1           Pins 2 & 3
                                                              closed

      Keyboard power on enabled               JP1           Pins 1 & 2
                                                              closed

     CMOS memory normal operation            JP12          Pins 2 & 3
                                                              closed

      CMOS memory clear                       JP12          Pins 1 & 2
                                                              closed

                    DIMM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2

      8MB       (1) 1M x 64        None          None

     16MB       (1) 2M x 64        None          None

     16MB       (1) 1M x 64    (1) 1M x 64       None

     24MB       (1) 2M x 64    (1) 1M x 64       None

     24MB       (1) 1M x 64    (1) 1M x 64    (1) 1M x 64

     32MB       (1) 4M x 64        None          None

     32MB       (1) 2M x 64    (1) 1M x 64    (1) 1M x 64

     32MB       (1) 2M x 64    (1) 2M x 64       None

     40MB       (1) 4M x 64    (1) 1M x 64       None

     40MB       (1) 2M x 64    (1) 2M x 64    (1) 1M x 64

     48MB       (1) 4M x 64    (1) 1M x 64    (1) 1M x 64

     48MB       (1) 4M x 64    (1) 2M x 64       None

     48MB       (1) 2M x 64    (1) 2M x 64    (1) 2M x 64

     56MB       (1) 4M x 64    (1) 2M x 64    (1) 1M x 64

     64MB       (1) 8M x 64        None          None

     64MB       (1) 4M x 64    (1) 2M x 64    (1) 2M x 64

     64MB       (1) 4M x 64    (1) 4M x 64       None

     72MB       (1) 8M x 64    (1) 1M x 64       None

     72MB       (1) 4M x 64    (1) 4M x 64    (1) 1M x 64

     80MB       (1) 8M x 64    (1) 1M x 64    (1) 1M x 64

                        DIMM CONFIGURATION (CON'T)

       Size              Bank 0            Bank 1             Bank 2

       80MB           (1) 8M x 64        (1) 2M x 64           None

       80MB           (1) 4M x 64        (1) 4M x 64       (1) 2M x 64

       88MB           (1) 8M x 64        (1) 2M x 64       (1) 1M x 64

       96MB           (1) 8M x 64        (1) 2M x 64       (1) 2M x 64

       96MB           (1) 8M x 64        (1) 4M x 64           None

       96MB           (1) 4M x 64        (1) 4M x 64       (1) 4M x 64

       104MB          (1) 8M x 64        (1) 4M x 64       (1) 1M x 64

       112MB          (1) 8M x 64        (1) 4M x 64       (1) 2M x 64

       128MB          (1) 16M x 64          None               None

       128MB          (1) 8M x 64        (1) 4M x 64       (1) 4M x 64

       128MB          (1) 8M x 64        (1) 8M x 64           None

       136MB          (1) 16M x 64       (1) 1M x 64           None

       136MB          (1) 8M x 64        (1) 8M x 64       (1) 1M x 64

       144MB          (1) 16M x 64       (1) 1M x 64       (1) 1M x 64

       144MB          (1) 16M x 64       (1) 2M x 64           None

       144MB          (1) 8M x 64        (1) 8M x 64       (1) 2M x 64

       152MB          (1) 16M x 64       (1) 2M x 64       (1) 1M x 64

       160MB          (1) 16M x 64       (1) 2M x 64       (1) 2M x 64

       168MB          (1) 16M x 64       (1) 4M x 64       (1) 1M x 64

       176MB          (1) 16M x 64       (1) 4M x 64       (1) 2M x 64

       192MB          (1) 16M x 64       (1) 4M x 64       (1) 4M x 64

       192MB          (1) 16M x 64       (1) 8M x 64           None

       192MB          (1) 8M x 64        (1) 8M x 64       (1) 8M x 64

       256MB          (1) 32M x 64          None               None

       256MB          (1) 16M x 64       (1) 8M x 64       (1) 8M x 64

       264MB          (1) 32M x 64       (1) 1M x 64           None

       272MB          (1) 32M x 64       (1) 1M x 64       (1) 1M x 64

       272MB          (1) 32M x 64       (1) 2M x 64           None

       288MB          (1) 32M x 64       (1) 2M x 64       (1) 2M x 64

       288MB          (1) 32M x 64       (1) 4M x 64           None

       320MB          (1) 32M x 64       (1) 4M x 64       (1) 4M x 64

       320MB          (1) 32M x 64       (1) 8M x 64           None

       384MB          (1) 32M x 64       (1) 8M x 64       (1) 8M x 64

       384MB          (1) 32M x 64      (1) 16M x 64           None

       384MB          (1) 16M x 64      (1) 16M x 64       (1) 16M x 64

       512MB          (1) 32M x 64      (1) 16M x 64       (1) 16M x 64

       512MB          (1) 32M x 64      (1) 32M x 64           None

       768MB          (1) 32M x 64      (1) 32M x 64       (1) 32M x 64

  Note: Board accepts EDO & SDRAM memory. Maximum SDRAM is 384MB. Maximum
  EDO is 768MB.

                     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       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

  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

