VEXTREC TECHNOLOGY, INC.
GMB-P55IPS (VER. 1.52)
| Processor | CX 6X86/CX 6X86L/AM K5/AM K6/Pentium/Pentium MMX | 
| Processor Speed | 90/100/120/133/150/166/200/233MHz | 
| Chip Set | Intel 440HX | 
| Video Chip Set | None | 
| Maximum Onboard Memory | 256MB (EDO supported) | 
| Maximum Video Memory | None | 
| Cache | 256/512KB | 
| BIOS | Award | 
| Dimensions | 265mm x 220mm | 
| I/O Options | 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connector, USB connectors (2) | 

| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| IR connector | J1 | Parallel port | J11 | 
| Power LED & keylock | J2 | Serial port 2 | J12 | 
| Speaker | J4 | Serial port 1 | J13 | 
| IDE interface LED | J5 | PS/2 mouse interface | J16 | 
| IDE interface 1 | J6 | PS/2 mouse port | J17 | 
| IDE interface 2 | J7 | Turbo LED | J19 | 
| Floppy drive interface | J8 | Green PC connector | JP8 | 
| USB connector 1 | J9 | Reset switch | JP11 | 
| USB connector 2 | J10 | 32-bit PCI slots | PC1 - PC4 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Factory configured - do not alter | J3 | Unidentified | 
| » | CMOS memory normal operation | JP13 | Open | 
| 
 | CMOS memory clear | JP13 | Closed | 
| 
 | Flash BIOS voltage select 12v | JP20 | Pins 1 & 2 closed | 
| 
 | Flash BIOS voltage select 5v | JP20 | Pins 2 & 3 closed | 
| DRAM CONFIGURATION | ||
| Size | Bank 0 | Bank 1 | 
| 8MB | (2) 1M x 36 | None | 
| 16MB | (2) 2M x 36 | None | 
| 16MB | (2) 1M x 36 | (2) 1M x 36 | 
| 24MB | (2) 2M x 36 | (2) 1M x 36 | 
| 32MB | (2) 4M x 36 | None | 
| 32MB | (2) 2M x 36 | (2) 2M x 36 | 
| 40MB | (2) 4M x 36 | (2) 1M x 36 | 
| 48MB | (2) 4M x 36 | (2) 2M x 36 | 
| 64MB | (2) 8M x 36 | None | 
| 64MB | (2) 4M x 36 | (2) 4M x 36 | 
| 72MB | (2) 8M x 36 | (2) 1M x 36 | 
| 80MB | (2) 8M x 36 | (2) 2M x 36 | 
| 96MB | (2) 8M x 36 | (2) 4M x 36 | 
| 128MB | (2) 8M x 36 | (2) 8M x 36 | 
| 128MB | (2) 16M x 36 | None | 
| 136MB | (2) 16M x 36 | (2) 1M x 36 | 
| 144MB | (2) 16M x 36 | (2) 2M x 36 | 
| 160MB | (2) 16M x 36 | (2) 4M x 36 | 
| 192MB | (2) 16M x 36 | (2) 8M x 36 | 
| 256MB | (2) 16M x 36 | (2) 16M x 36 | 
| Note: Board accepts EDO memory. | ||
| CACHE CONFIGURATION | |||
| Size | Bank 0 | Bank 1 | TAG | 
| 256KB | (2) 32K x 32 | None | (1) 8K x 8 | 
| 512KB | (2) 32K x 32 | (2) 32K x 32 | (1) 16K/32K x 8 | 
| 512KB | (2) 64K x 32 | None | (1) 16K/32K x 8 | 
| Note: The location of Banks 0 & 1 is unidentified. | |||
| CPU SPEED SELECTION (CX 6X86) | |||||
| CPU speed | Clock speed | Multiplier | JP1 | JP2 | JP18 | 
| 120MHz | 50MHz | 2x | Closed | Open | 1 & 2, 3 & 4 | 
| 133MHz | 55MHz | 2x | Closed | Open | Open | 
| 150MHz | 60MHz | 2x | Closed | Open | 3 & 4 | 
| 166MHz | 66MHz | 2x | Closed | Open | 1 & 2 | 
| 200MHz | 75MHz | 2x | Closed | Open | 5 & 6 | 
| Note: Pins designated should be in the closed position. | |||||
| CPU SPEED SELECTION (CX 6X86L) | |||||
| CPU speed | Clock speed | Multiplier | JP1 | JP2 | JP18 | 
| 120MHz | 50MHz | 2x | Closed | Open | 1 & 2, 3 & 4 | 
| 133MHz | 55MHz | 2x | Closed | Open | Open | 
| 150MHz | 60MHz | 2x | Closed | Open | 3 & 4 | 
| 166MHz | 66MHz | 2x | Closed | Open | 1 & 2 | 
| 200MHz | 75MHz | 2x | Closed | Open | 5 & 6 | 
| Note: Pins designated should be in the closed position. | |||||
| CPU SPEED SELECTION (AM K5) | |||||
| CPU speed | Clock speed | Multiplier | JP1 | JP2 | JP18 | 
| 75MHz | 50MHz | 1.5x | Open | Open | 1 & 2, 3 & 4 | 
| 90MHz | 60MHz | 1.5x | Open | Open | 3 & 4 | 
| 100MHz | 66MHz | 1.5x | Open | Open | 1 & 2 | 
| 120MHz | 60MHz | 1.5x | Open | Open | 3 & 4 | 
| 133MHz | 66MHz | 2x | Closed | Open | 1 & 2 | 
| 150MHz | 60MHz | 1.5x | Open | Open | 1 & 2 | 
| 166MHz | 66MHz | 2.5x | Closed | Closed | 1 & 2 | 
| Note: Pins designated should be in the closed position. | |||||
| CPU SPEED SELECTION (AM K6) | |||||
| CPU speed | Clock speed | Multiplier | JP1 | JP2 | JP18 | 
| 166MHz | 66MHz | 2.5x | Closed | Closed | 1 & 2 | 
| 200MHz | 66MHz | 3x | Open | Closed | 1 & 2 | 
| 233MHz | 66MHz | 3.5x | Open | Open | 1 & 2 | 
| Note: Pins designated should be in the closed position. | |||||
| CPU SPEED SELECTION (INTEL) | |||||
| CPU speed | Clock speed | Multiplier | JP1 | JP2 | JP18 | 
| 75MHz | 50MHz | 1.5x | Open | Open | 1 & 2, 3 & 4 | 
| 90MHz | 60MHz | 1.5x | Open | Open | 3 & 4 | 
| 100MHz | 66MHz | 1.5x | Open | Open | 1 & 2 | 
| 120MHz | 60MHz | 2x | Closed | Open | 3 & 4 | 
| 133MHz | 66MHz | 2x | Closed | Open | 1 & 2 | 
| 150MHz | 60MHz | 2.5x | Closed | Closed | 3 & 4 | 
| 166MHz | 66MHz | 2.5x | Closed | Closed | 1 & 2 | 
| 200MHz | 66MHz | 3x | Open | Closed | 1 & 2 | 
| Note: Pins designated should be in the closed position. | |||||
| CPU SPEED SELECTION (INTEL MMX) | |||||
| CPU speed | Clock speed | Multiplier | JP1 | JP2 | JP18 | 
| 166MHz | 66MHz | 2.5x | Closed | Closed | 1 & 2 | 
| 200MHz | 66MHz | 3x | Open | Closed | 1 & 2 | 
| 233MHz | 66MHz | 3.5x | Open | Open | 1 & 2 | 
| Note: Pins designated should be in the closed position. | |||||
| CPU VOLTAGE SELECTION (SINGLE) | |||||
| Voltage | JP9 | JP10 | JP12 | JP14 | JP16 | 
| 3.3v | Open | Closed | Open | 1 & 2, 3 & 4, 5 & 6, 7 & 8 | Open | 
| 3.5v | Closed | Open | Open | 1 & 2, 3 & 4, 5 & 6, 7 & 8 | Open | 
| Note: Pins designated should be in the closed position. | |||||
| CPU VOLTAGE SELECTION (DUAL) | ||||||
| Voltage | V core | JP9 | JP10 | JP12 | JP14 | JP16 | 
| 3.3v | 2.8v | Open | Closed | Closed | Open | Open | 
| 3.3v | 2.9v | Open | Closed | Open | Open | Closed | 
| 3.3v | 3.2v | Open | Closed | Open | Open | Open | 
| Note: Pins designated should be in the closed position. | ||||||