VEXTREC TECHNOLOGY, INC.
GMB-P57SAX (VER. 1.20)
| Processor | CX 6X86L/CX 6X86MX/AM K5/AM K6/Pentium/Pentium MMX | 
| Processor Speed | 90/100/120/133/150/166/200/233/266MHz | 
| Chip Set | SIS | 
| Video Chip Set | SIS | 
| Audio Chip Set | ESS | 
| Maximum Onboard Memory | 384MB (EDO supported) | 
| Maximum Video Memory | Unidentified | 
| Cache | 512KB | 
| BIOS | Award | 
| Dimensions | 304mm x 210mm | 
| I/O Options | 32-bit PCI slots (4), floppy drive interface, game port, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector, wavetable connector, microphone in, line in, speaker out, CPU fan connector | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| ATX power connector | ATX | Power LED & keylock | J1/pins 11 - 15 | 
| Game port | CN1 | Speaker | J1/pins 17 - 20 | 
| Microphone in | CN2 | Wavetable connector | J2 | 
| Line in | CN3 | Audio in CD–ROM (Panasonic) | J3 | 
| Speaker out | CN4 | Audio in CD–ROM (Sony) | J4 | 
| VGA port | CN5 | Floppy drive interface | J5 | 
| Serial port 1 | CN6 | IDE interface 1 | J6 | 
| Parallel port | CN7 | IDE interface 2 | J7 | 
| USB connector 1 | CN8 | IR connector | J8 | 
| USB connector 2 | CN9 | Chassis fan power | J9 | 
| PS/2 mouse port | CN10 | VGA feature connector | J10 | 
| IDE interface LED | J1/pins 1 & 2 | Serial port 2 | J11 | 
| ACPI LED | J1/pins 3 & 4 | CPU fan connector | J17 | 
| Power button | J1/pins 5 & 6 | Internal modem ring in connector | JP11 | 
| Power switch | J1/pins 7 & 8 | 32-bit PCI slots | PCI – PC4 | 
| Reset switch | J1/pins 9 & 10 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| Flash BIOS voltage select 12v | JP1 | Pins 1 & 2 closed | |
| Flash BIOS voltage select 5v | JP1 | Pins 2 & 3 closed | |
| On board audio enabled | JP3 | Closed | |
| On board audio disabled | JP3 | Open | |
| » | Factory configured - do not alter | JP6 | Open | 
| » | Factory configured - do not alter | JP7 | Pins 2 & 3 closed | 
| » | CMOS memory normal operation | JP8 | Pins 1 & 2 closed | 
| CMOS memory clear | JP8 | Pins 2 & 3 closed | |
| DIMM/DRAM CONFIGURATION | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 8MB | (2) 1M x 32 | None | None | None | 
| 8MB | None | None | (1) 1M x 64 | None | 
| 16MB | (2) 2M x 32 | None | None | None | 
| 16MB | None | None | (1) 2M x 64 | None | 
| 16MB | (2) 1M x 32 | (2) 1M x 32 | None | None | 
| 16MB | (2) 1M x 32 | None | None | (1) 1M x 64 | 
| 16MB | None | None | (1) 1M x 64 | (1) 1M x 64 | 
| 24MB | None | (2) 2M x 32 | (1) 1M x 64 | None | 
| 32MB | (2) 4M x 32 | None | None | None | 
| 32MB | None | None | (1) 4M x 64 | None | 
| 32MB | (2) 2M x 32 | None | None | (1) 2M x 64 | 
| DIMM/DRAM CONFIGURATION (CON’T) | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 40MB | (2) 4M x 32 | (2) 1M x 32 | None | None | 
| 40MB | (2) 4M x 32 | None | None | (1) 1M x 64 | 
| 48MB | (2) 2M x 32 | None | None | (1) 4M x 64 | 
| 48MB | (2) 4M x 32 | (2) 2M x 32 | None | None | 
| 48MB | (2) 4M x 32 | None | None | (1) 2M x 64 | 
| 64MB | (2) 8M x 32 | None | None | None | 
| 64MB | None | None | None | (1) 8M x 64 | 
| 64MB | (2) 4M x 32 | (2) 4M x 32 | None | None | 
| 64MB | (2) 4M x 32 | None | None | (1) 4M x 64 | 
| 72MB | (2) 8M x 32 | (2) 1M x 32 | None | None | 
| 72MB | (2) 8M x 32 | None | None | (1) 1M x 64 | 
| 80MB | (2) 2M x 32 | None | None | (1) 8M x 64 | 
| 80MB | (2) 8M x 32 | (2) 2M x 32 | None | None | 
| 80MB | (2) 8M x 32 | None | None | (1) 2M x 64 | 
| 96MB | (2) 4M x 32 | None | None | (1) 8M x 64 | 
| 96MB | (2) 8M x 32 | (2) 4M x 32 | None | None | 
| 96MB | (2) 8M x 32 | None | None | (1) 4M x 64 | 
| 128MB | (2) 16M x 32 | None | None | None | 
| 128MB | (2) 8M x 32 | (2) 8M x 32 | None | None | 
| 128MB | (2) 8M x 32 | None | None | (1) 8M x 64 | 
| 136MB | (2) 16M x 32 | (2) 1M x 32 | None | None | 
| 144MB | (2) 16M x 32 | (2) 2M x 32 | None | None | 
| 144MB | None | (2) 16M x 32 | None | (1) 2M x 64 | 
| 160MB | (2) 16M x 32 | (2) 4M x 32 | None | None | 
| 160MB | None | (2) 16M x 32 | None | (1) 4M x 64 | 
| 192MB | (2) 16M x 32 | (2) 8M x 32 | None | None | 
| 192MB | None | (2) 16M x 32 | None | (1) 8M x 64 | 
| 256MB | (2) 16M x 32 | (2) 16M x 32 | None | None | 
| 264MB | (2) 16M x 32 | (2) 16M x 32 | None | (1) 1M x 64 | 
| 384MB | None | (2) 16M x 32 | (1) 16M x 64 | (1) 16M x 64 | 
| Note: Board accepts EDO memory. | ||||
| CACHE CONFIGURATION | ||
| Size | Bank 0 | TAG | 
| 512KB | (2) 64K x 32 | Unidentified | 
| CPU SPEED SELECTION (CX 6X86) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 | 
| 133MHz | 55MHz | 2x | On | Off | Off | On | On | Off | 
| 150MHz | 60MHz | 2x | On | Off | Off | On | Off | Off | 
| CPU SPEED SELECTION (CX 6X86L) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 | 
| 166MHz | 66MHz | 2x | On | Off | Off | Off | Off | Off | 
| 200MHz | 75MHz | 2x | On | Off | Off | Off | On | Off | 
| CPU SPEED SELECTION (CX 6X86MX) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 | 
| 166MHz | 66MHz | 2x | On | Off | Off | Off | Off | Off | 
| 200MHz | 75MHz | 2x | On | Off | Off | Off | On | Off | 
| CPU SPEED SELECTION (AM K5) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 | 
| 120MHz | 60MHz | 1.5x | On | Off | Off | On | Off | Off | 
| 133MHz | 66MHz | 2x | On | Off | Off | Off | Off | Off | 
| 166MHz | 66MHz | 2.5x | On | On | Off | Off | Off | Off | 
| CPU SPEED SELECTION (AM K6) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 | 
| 166MHz | 66MHz | 2.5x | On | On | Off | Off | Off | Off | 
| 200MHz | 66MHz | 3x | Off | On | Off | Off | Off | Off | 
| 233MHz | 66MHz | 3.5x | Off | Off | Off | Off | Off | Off | 
| 266MHz | 66MHz | 4x | Off | Off | On | Off | Off | Off | 
| CPU SPEED SELECTION (INTEL) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 | 
| 90MHz | 60MHz | 1.5x | Off | Off | Off | On | Off | Off | 
| 100MHz | 66MHz | 1.5x | Off | Off | Off | Off | Off | Off | 
| 120MHz | 60MHz | 2x | On | Off | Off | On | Off | Off | 
| 133MHz | 66MHz | 2x | On | Off | Off | Off | Off | Off | 
| 150MHz | 60MHz | 2.5x | On | On | Off | On | Off | Off | 
| 166MHz | 66MHz | 2.5x | On | On | Off | Off | Off | Off | 
| 200MHz | 66MHz | 3x | Off | On | Off | Off | Off | Off | 
| CPU SPEED SELECTION (INTEL MMX) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 | 
| 166MHz | 66MHz | 2.5x | On | On | Off | Off | Off | Off | 
| 200MHz | 66MHz | 3x | Off | On | Off | Off | Off | Off | 
| 233MHz | 66MHz | 3.5x | Off | Off | Off | Off | Off | Off | 
| CPU TYPE SELECTION | ||
| Setting | SW1/1 | SW1/2 | 
| Auto-detect | Off | Off | 
| Pentium/AM K6-166,-200 | On | Off | 
| CX 6X86/AM K5 | On | On | 
| ON BOARD VGA SELECTION | ||
| Setting | JP4 | JP5 | 
| Enabled | Pins 2 & 3 closed | Pins 1 & 2 closed | 
| Disabled | Pins 1 & 2 closed | Pins 2 & 3 closed |