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# GIGA-BYTE TECHNOLOGY CO., LTD.
GA-686LX4 (VER. 2.2)
Device Type Mainboard
Processor Pentium II/Celeron
Processor Speed 233/266/300/333MHz
Chip Set Intel 440LX
Maximum Onboard 1GB (EDO & SDRAM supported)
Memory
Cache 0/128/256/512KB (located on the 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
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+-------------------+-----------|
| AGP slot | AGP | IDE interface 1 | CN8 |
|-----------------+----------+-------------------+-----------|
| ATX power | ATX | Floppy drive | CN9 |
| connector | | interface | |
|-----------------+----------+-------------------+-----------|
| CPU fan power | C1 | IR connector | IR1 |
|-----------------+----------+-------------------+-----------|
| SB-link | C2 | Wake on LAN | J13 |
| connector | | connector | |
|-----------------+----------+-------------------+-----------|
| Power fan power | C3 | Wake on modem | J19 |
| | | connector | |
|-----------------+----------+-------------------+-----------|
| Chassis fan | C4 | Green PC LED | JP7/pins |
| power | | | 1 & 12 |
|-----------------+----------+-------------------+-----------|
| Parallel port | CN1 | Reset switch | JP7/pins |
| | | | 3 & 4 |
|-----------------+----------+-------------------+-----------|
| Serial port 1 | CN2 | Speaker | JP7/pins |
| | | | 5 - 8 |
|-----------------+----------+-------------------+-----------|
| Serial port 2 | CN3 | IDE interface LED | JP7/pins |
| | | | 9 & 20 |
|-----------------+----------+-------------------+-----------|
| USB connector 1 | CN4 | Green PC | JP7/pins |
| | | connector | 11 & 22 |
|-----------------+----------+-------------------+-----------|
| USB connector 2 | CN5 | Soft off power | JP7/pins |
| | | supply | 15 & 16 |
|-----------------+----------+-------------------+-----------|
| PS/2 mouse port | CN6 | Power LED | JP7/pins |
| | | | 17 - 19 |
|-----------------+----------+-------------------+-----------|
| IDE interface 2 | CN7 | 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 | JP8 | Pins 2 & 3 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | CMOS memory clear | JP8 | 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 | 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 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x | (1) 2M x |
| | | | 64 | 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 | None |
| | | | 64 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|---------+--------------+-----------+-----------+-----------|
| 128MB | (1) 16M x 64 | None | None | None |
|---------+--------------+-----------+-----------+-----------|
| 128MB | (1) 8M x 64 | (1) 8M x | None | None |
| | | 64 | | |
|---------+--------------+-----------+-----------+-----------|
| 128MB | (1) 4M x 64 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 64 | 64 | 64 |
|---------+--------------+-----------+-----------+-----------|
| 136MB | (1) 16M x 64 | (1) 1M x | None | None |
| | | 64 | | |
|---------+--------------+-----------+-----------+-----------|
| 144MB | (1) 16M x 64 | (1) 2M x | None | None |
| | | 64 | | |
|---------+--------------+-----------+-----------+-----------|
| 176MB | (1) 16M x 64 | (1) 2M x | (1) 2M x | (1) 2M x |
| | | 64 | 64 | 64 |
|---------+--------------+-----------+-----------+-----------|
| 192MB | (1) 16M x 64 | (1) 8M x | None | None |
| | | 64 | | |
|---------+--------------+-----------+-----------+-----------|
| 192MB | (1) 8M x 64 | (1) 8M x | (1) 8M x | None |
| | | 64 | 64 | |
|---------+--------------+-----------+-----------+-----------|
| 256MB | (1) 32M x 64 | None | None | None |
|---------+--------------+-----------+-----------+-----------|
| 256MB | (1) 16M x 64 | (1) 16M x | None | None |
| | | 64 | | |
|---------+--------------+-----------+-----------+-----------|
| 256MB | (1) 8M x 64 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 64 | 64 | 64 |
|---------+--------------+-----------+-----------+-----------|
| 272MB | (1) 16M x 64 | (1) 16M x | (1) 1M x | (1) 1M x |
| | | 64 | 64 | 64 |
|---------+--------------+-----------+-----------+-----------|
| 280MB | (1) 32M x 64 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 64 | 64 | 64 |
|---------+--------------+-----------+-----------+-----------|
| 288MB | (1) 16M x 64 | (1) 16M x | (1) 2M x | (1) 2M x |
| | | 64 | 64 | 64 |
|---------+--------------+-----------+-----------+-----------|
| 320MB | (1) 16M x 64 | (1) 16M x | (1) 4M x | (1) 4M x |
| | | 64 | 64 | 64 |
|---------+--------------+-----------+-----------+-----------|
| 384MB | (1) 16M x 64 | (1) 16M x | (1) 16M x | None |
| | | 64 | 64 | |
|---------+--------------+-----------+-----------+-----------|
| 448MB | (1) 32M x 64 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 64 | 64 | 64 |
|---------+--------------+-----------+-----------+-----------|
| 512MB | (1) 32M x 64 | (1) 32M x | None | None |
| | | 64 | | |
|---------+--------------+-----------+-----------+-----------|
| 512MB | (1) 16M x 64 | (1) 16M x | (1) 16M x | (1) 16M x |
| | | 64 | 64 | 64 |
|---------+--------------+-----------+-----------+-----------|
| 640MB | (1) 32M x 64 | (1) 16M x | (1) 16M x | (1) 16M x |
| | | 64 | 64 | 64 |
|---------+--------------+-----------+-----------+-----------|
| 768MB | (1) 32M x 64 | (1) 32M x | (1) 32M x | None |
| | | 64 | 64 | |
|---------+--------------+-----------+-----------+-----------|
| 1024MB | (1) 32M x 64 | (1) 32M x | (1) 32M x | (1) 32M x |
| | | 64 | 64 | 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. |
| 128KB cache is located on the Celeron 300A & 333 CPU. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU speed | Clock | Multiplier | JP2 | JP3 | JP4 |
| | speed | | | | |
|------------+----------+------------+-------+-------+-------|
| 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 |
+------------------------------------------------------------+