GIGA-BYTE TECHNOLOGY CO., LTD. ============================== GA-686BX (REV. 2.0) Device Type Mainboard Processor Pentium II Processor Speed 233/266/300/333/350/366/400/450MHz Chip Set Intel 440BX Video Chip Set None Maximum Onboard 1GB (SDRAM supported) Memory Maximum Video None Memory Cache 512KB (located on Pentium II CPU) BIOS Award Dimensions 305mm x 190mm 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 +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |-----------------+----------+------------------+------------| | AGP slot | AGP | PS/2 mouse port | CN6 | |-----------------+----------+------------------+------------| | ATX power | ATX | IDE interface 2 | CN7 | | connector | | | | |-----------------+----------+------------------+------------| | Speaker | C1 | IDE interface 1 | CN8 | |-----------------+----------+------------------+------------| | Reset switch | C2 | Floppy drive | CN9 | | | | interface | | |-----------------+----------+------------------+------------| | Power LED | C3 | System AC back | J15 | | | | connector | | |-----------------+----------+------------------+------------| | IDE interface | C4 | Wake on LAN | JP7 | | LED | | connector | | |-----------------+----------+------------------+------------| | IR connector | C5 | SB-link | JP8 | | | | connector | | |-----------------+----------+------------------+------------| | Green PC | C6 | Green PC LED | JP9/pins 1 | | connector | | | & 10 | |-----------------+----------+------------------+------------| | Soft off power | C7 | Reset switch | JP9/pins 2 | | supply | | | & 3 | |-----------------+----------+------------------+------------| | Green PC LED | C8 | Speaker | JP9/pins 4 | | | | | - 7 | |-----------------+----------+------------------+------------| | CPU fan power | C9 | IDE interface | JP9/pins 8 | | | | LED | & 17 | |-----------------+----------+------------------+------------| | Parallel port | CN1 | Green PC | JP9/pins 9 | | | | connector | & 18 | |-----------------+----------+------------------+------------| | Serial port 1 | CN2 | Soft off power | JP9/pins | | | | supply | 12 & 13 | |-----------------+----------+------------------+------------| | Serial port 2 | CN3 | Power LED | JP9/pins | | | | | 14 - 16 | |-----------------+----------+------------------+------------| | USB connector 1 | CN4 | 32-bit PCI slots | PC1 - PC4 | |-----------------+----------+------------------+------------| | USB connector 2 | CN5 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Label | Position | |--------------------------------+-------+-------------------| | | Keyboard power on enabled | JP1 | Pins 1 & 2 closed | |---+----------------------------+-------+-------------------| | | Keyboard power on disabled | JP1 | Pins 2 & 3 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 | None | | | | | 64 | | |------+-------------+-------------+------------+------------| | 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 | (1) 1M x | | | | | 64 | 64 | |------+-------------+-------------+------------+------------| | 40MB | (1) 4M x 64 | (1) 1M x 64 | None | None | |------+-------------+-------------+------------+------------| | 48MB | (1) 4M x 64 | (1) 2M x 64 | None | None | +------------------------------------------------------------+ +------------------------------------------------------------+ | DIMM CONFIGURATION (CON'T) | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |--------+------------+------------+------------+------------| | 48MB | (1) 2M x | (1) 2M x | (1) 2M x | None | | | 64 | 64 | 64 | | |--------+------------+------------+------------+------------| | 64MB | (1) 2M x | (1) 2M x | (1) 2M x | (1) 2M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 64MB | (1) 8M x | None | None | None | | | 64 | | | | |--------+------------+------------+------------+------------| | 64MB | (1) 4M x | (1) 4M x | None | None | | | 64 | 64 | | | |--------+------------+------------+------------+------------| | 72MB | (1) 8M x | (1) 1M x | None | None | | | 64 | 64 | | | |--------+------------+------------+------------+------------| | 80MB | (1) 8M x | (1) 2M x | None | None | | | 64 | 64 | | | |--------+------------+------------+------------+------------| | 96MB | (1) 8M x | (1) 4M x | None | None | | | 64 | 64 | | | |--------+------------+------------+------------+------------| | 96MB | (1) 4M x | (1) 4M x | (1) 4M x | None | | | 64 | 64 | 64 | | |--------+------------+------------+------------+------------| | 128MB | (1) 16M x | None | None | None | | | 64 | | | | |--------+------------+------------+------------+------------| | 128MB | (1) 8M x | (1) 8M x | None | None | | | 64 | 64 | | | |--------+------------+------------+------------+------------| | 128MB | (1) 4M x | (1) 4M x | (1) 4M x | (1) 4M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 136MB | (1) 16M x | (1) 1M x | None | None | | | 64 | 64 | | | |--------+------------+------------+------------+------------| | 144MB | (1) 16M x | (1) 2M x | None | None | | | 64 | 64 | | | |--------+------------+------------+------------+------------| | 152MB | (1) 16M x | (1) 1M x | (1) 1M x | (1) 1M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 160MB | (1) 16M x | (1) 4M x | None | None | | | 64 | 64 | | | |--------+------------+------------+------------+------------| | 176MB | (1) 16M x | (1) 2M x | (1) 2M x | (1) 2M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 192MB | (1) 16M x | (1) 8M x | None | None | | | 64 | 64 | | | |--------+------------+------------+------------+------------| | 192MB | (1) 8M x | (1) 8M x | (1) 8M x | None | | | 64 | 64 | 64 | | |--------+------------+------------+------------+------------| | 224MB | (1) 16M x | (1) 4M x | (1) 4M x | (1) 4M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 256MB | (1) 32M x | None | None | None | | | 64 | | | | |--------+------------+------------+------------+------------| | 256MB | (1) 16M x | (1) 16M x | None | None | | | 64 | 64 | | | |--------+------------+------------+------------+------------| | 256MB | (1) 8M x | (1) 8M x | (1) 8M x | (1) 8M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 272MB | (1) 16M x | (1) 16M x | (1) 1M x | (1) 1M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 280MB | (1) 32M x | (1) 1M x | (1) 1M x | (1) 1M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 288MB | (1) 16M x | (1) 16M x | (1) 2M x | (1) 2M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 320MB | (1) 16M x | (1) 16M x | (1) 4M x | (1) 4M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 320MB | (1) 16M x | (1) 8M x | (1) 8M x | (1) 8M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 352MB | (1) 32M x | (1) 4M x | (1) 4M x | (1) 4M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 384MB | (1) 16M x | (1) 16M x | (1) 16M x | None | | | 64 | 64 | 64 | | |--------+------------+------------+------------+------------| | 448MB | (1) 32M x | (1) 8M x | (1) 8M x | (1) 8M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 512MB | (1) 32M x | (1) 32M x | None | None | | | 64 | 64 | | | |--------+------------+------------+------------+------------| | 512MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 640MB | (1) 32M x | (1) 16M x | (1) 16M x | (1) 16M x | | | 64 | 64 | 64 | 64 | |--------+------------+------------+------------+------------| | 768MB | (1) 32M x | (1) 32M x | (1) 32M x | None | | | 64 | 64 | 64 | | |--------+------------+------------+------------+------------| | 1024MB | (1) 32M x | (1) 32M x | (1) 32M x | (1) 32M x | | | 64 | 64 | 64 | 64 | |------------------------------------------------------------| | Note: Board accepts SDRAM memory. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Note: 512KB cache is located on the Pentium II CPU. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED SELECTION | |------------------------------------------------------------| |CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 | |---------+-----------+----------+------+------+------+------| | 233MHz | 66MHz | 3.5x | Off | Off | On | On | |---------+-----------+----------+------+------+------+------| | 266MHz | 66MHz | 4x | On | On | Off | On | |---------+-----------+----------+------+------+------+------| | 300MHz | 66MHz | 4.5x | Off | On | Off | On | |---------+-----------+----------+------+------+------+------| | 300MHz | 100MHz | 3x | On | Off | On | On | |---------+-----------+----------+------+------+------+------| | 333MHz | 66MHz | 5x | On | Off | Off | On | |---------+-----------+----------+------+------+------+------| | 350MHz | 100MHz | 3.5x | Off | Off | On | On | |---------+-----------+----------+------+------+------+------| | 366MHz | 66MHz | 5.5x | Off | Off | Off | On | |---------+-----------+----------+------+------+------+------| | 400MHz | 100MHz | 4x | On | On | Off | On | |---------+-----------+----------+------+------+------+------| | 450MHz | 100MHz | 4.5x | Off | On | Off | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | MAINBOARD BUS SPEED SELECTION | |------------------------------------------------------------| | Speed | JP6 | |----------------------------+-------------------------------| | Auto detect | Pins 2 & 3 closed | |----------------------------+-------------------------------| | 66MHz | Pins 1 & 2 closed | |----------------------------+-------------------------------| | 100MHz | Open | +------------------------------------------------------------+