SOYO COMPUTER CO., LTD.
5XB5
| Processor | CX 6X86/CX 6X86L/CX 6X86MX/AM K5/AM K6/Pentium | 
| Processor Speed | 75/90/100/120/133/150/166/180/200/233MHz | 
| Chip Set | Unidentified | 
| Video Chip Set | None | 
| Maximum Onboard Memory | 256MB (EDO supported) | 
| Maximum Video Memory | None | 
| Cache | 512KB | 
| BIOS | Unidentified | 
| Dimensions | 254mm x 218mm | 
| 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 connector, ATX connector | 
| NPU Options | None | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| ATX power connector | ATX | Speaker | J18 | 
| Floppy drive interface | CN1 | Reset switch | J19 | 
| Parallel port | CN2 | Turbo LED | J22 | 
| Serial port 2 | CN3 | IDE interface LED | J24 | 
| Serial port 1 | CN4 | CPU cooling fan | JP43 | 
| IDE interface 2 | CN5 | Wake on LAN connector | JP44 | 
| IDE interface 1 | CN6 | 32-bit PCI slots | PC1 – PC4 | 
| PS/2 mouse port | CN7 | Soft off power supply | PW2 | 
| IR connector | IR1 | USB connector | USB | 
| Power LED & keylock | J17 | 
 | 
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| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Power supply select AT | JP1 | Closed | 
| Power supply select ATX | JP1 | Open | |
| » | CMOS memory normal operation | JP5 | Pins 1 & 2 closed | 
| CMOS memory clear | JP5 | Pins 2 & 3 closed | |
| » | Flash BIOS select SST, MXIC, WINBON, ATMEL | JP38 | Pins 2 & 3 closed | 
| Flash BIOS Intel | JP38 | Pins 1 & 2 closed | |
| 
 | CE test disabled | JP40 | Closed | 
| CE test enabled | JP40 | Open | |
| DIMM/SIMM CONFIGURATION | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 8MB | None | (1) 1M x 64 | None | None | 
| 8MB | (2) 1M x 36 | None | None | None | 
| 16MB | None | (1) 2M x 64 | None | None | 
| 16MB | (2) 2M x 36 | None | None | None | 
| 16MB | None | (1) 1M x 64 | (1) 1M x 64 | None | 
| 16MB | (2) 1M x 36 | (1) 1M x 64 | None | None | 
| 24MB | None | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 | 
| 24MB | (2) 1M x 36 | (1) 1M x 64 | (1) 1M x 64 | None | 
| 32MB | None | (1) 4M x 64 | None | None | 
| 32MB | (2) 4M x 36 | None | None | None | 
| 32MB | None | (1) 2M x 64 | (1) 2M x 64 | None | 
| 32MB | (2) 1M x 36 | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 | 
| 40MB | (2) 1M x 36 | (1) 2M x 64 | (1) 2M x 64 | None | 
| 40MB | (2) 1M x 36 | None | (1) 4M x 64 | None | 
| 48MB | None | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 | 
| 64MB | None | (1) 8M x 64 | None | None | 
| DIMM/SIMM CONFIGURATION (CON’T) | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 64MB | (2) 8M x 36 | None | None | None | 
| 64MB | None | (1) 4M x 64 | (1) 4M x 64 | None | 
| 72MB | (2) 1M x 36 | None | (1) 8M x 64 | None | 
| 128MB | (2) 16M x 36 | None | None | None | 
| 256MB | (2) 8M x 36 | (1) 8M x 64 | (1) 8M x 64 | None | 
| Note: Board accepts EDO memory. | ||||
| DIMM VOLTAGE CONFIGURATION | ||
| Voltage | JP37A | JP37B | 
| 3.3v | Pins 2 & 3 closed | Pins 2 & 3 closed | 
| 5v | Pins 1 & 2 closed | Pins 1 & 2 closed | 
| CACHE CONFIGURATION | ||
| Size | Bank 0 | TAG | 
| 512KB | (2) 64K x 32 | (1) 32K x 8 | 
| CPU SPEED SELECTION (CX 6X86/6X 86L) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | 
| 150MHz | 60MHz | 2x | On | Off | On | Off | Off | Off | 
| 166MHz | 66MHz | 2x | On | Off | Off | Off | Off | Off | 
| 200MHz | 75MHz | 2x | On | Off | Off | On | Off | Off | 
| CPU SPEED SELECTION (CX 6X86MX) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | 
| 166MHz | 60MHz | 2.5x | On | On | On | Off | Off | Off | 
| 166MHz | 66MHz | 2x | On | Off | Off | Off | Off | Off | 
| 200MHz | 66MHz | 2.5x | On | On | Off | Off | Off | Off | 
| 200MHz | 75MHz | 2x | On | Off | Off | On | Off | Off | 
| 233MHz | 66MHz | 3x | Off | On | Off | Off | Off | Off | 
| 233MHz | 75MHz | 2.5x | On | On | Off | On | Off | Off | 
| CPU SPEED SELECTION (AM K5) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | 
| 75MHz | 50MHz | 1.5x | Off | Off | On | On | On | Off | 
| 90MHz | 60MHz | 1.5x | Off | Off | On | Off | Off | Off | 
| 100MHz | 66MHz | 1.5x | Off | Off | Off | Off | Off | Off | 
| 120MHz | 60MHz | 1.5x | Off | Off | On | Off | Off | Off | 
| 133MHz | 66MHz | 1.5x | Off | Off | Off | Off | Off | Off | 
| 150MHz | 60MHz | 2.5x | On | On | On | Off | Off | Off | 
| 166MHz | 66MHz | 2.5x | On | On | Off | Off | Off | Off | 
| CPU SPEED SELECTION (AM K6) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | 
| 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 SPEED SELECTION (INTEL) | ||||||||
| CPU speed | Clock speed | Multiplier | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | 
| 75MHz | 50MHz | 1.5x | Off | Off | On | On | On | Off | 
| 90MHz | 60MHz | 1.5x | Off | Off | On | Off | Off | Off | 
| 100MHz | 66MHz | 1.5x | Off | Off | Off | Off | Off | Off | 
| 120MHz | 60MHz | 2x | On | Off | On | Off | Off | Off | 
| 133MHz | 66MHz | 2x | On | Off | Off | Off | Off | Off | 
| 150MHz | 60MHz | 2.5x | On | On | On | Off | Off | Off | 
| 166MHz | 66MHz | 2.5x | On | On | Off | Off | Off | Off | 
| 180MHz | 60MHz | 3x | Off | On | On | Off | Off | Off | 
| 200MHz | 66MHz | 3x | Off | On | Off | Off | Off | Off | 
| 233MHz | 66MHz | 3.5x | Off | Off | Off | Off | Off | Off | 
| CPU VOLTAGE SELECTION (SINGLE) | ||
| Voltage | JP30 | |
| 3.3v | Pins 1 & 2, 9 & 10 closed | |
| » | 3.52v | Pins 1 & 2, 11 & 12 closed | 
| CPU VOLTAGE SELECTION (DUAL) | ||
| Voltage | JP30 | |
| 2.1v | Pins 5 & 6 closed | |
| » | 2.8v | Pins 1 & 2, 11 & 12 closed | 
| 2.9v | Pins 1 & 2, 5 & 6 closed | |
| 3.2v | Pins 1 & 2, 7 & 8 closed | |
| MISCELLANEOUS TECHNICAL NOTE | 
| If board has problems detecting voltage on older version non Intel CPUs, remove the jumper from JP9. |