SIEMENS NIXDORF
SYSTEM BOARD D992 (SINGLE)
| Device Type | Mainboard | 
| Processor | Pentium II | 
| Processor Speed | 233/266/300/333MHz | 
| Chip Set | Intel 440FX | 
| Video Chip Set | Cirrus Logic | 
| Maximum Onboard Memory | 512MB | 
| Maximum Video Memory | 2MB | 
| Cache | 256/512KB (located on Pentium II CPU) | 
| BIOS | Unidentified | 
| Dimensions | 305mm x 244mm | 
| I/O Options | 32-bit PCI slots (6), floppy drive interface, IDE interface, Wide Ultra SCSI interface, parallel port, PS/2 mouse port, serial ports (2), VGA port, VRM connector, wake on modem connector | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| ATX power connector | ATX | Front panel connector | C12 | 
| SMM connector | C1 | PS/2 mouse port | CN1 | 
| Chassis fan power | C2 | Serial port 2 | CN2 | 
| Chassis fan power | C3 | Serial port 1 | CN3 | 
| Speaker | C4 | Parallel port | CN4 | 
| Control panel connector | C5 | VGA port | CN5 | 
| Temperature sensor | C6 | Floppy drive interface | CN6 | 
| SCSI interface LED | C7 | Ultra Wide SCSI interface | CN7 | 
| Wake on modem connector | C8 | IDE interface | CN8 | 
| Can bus control connector 1 | C9 | 32-bit PCI slots | PC1 – PC6 | 
| Can bus control connector 2 | C10 | VRM connector | VRM1 | 
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Flash BIOS normal operation | SW1/1 | Off | 
| Flash BIOS recovery mode | SW1/1 | On | |
| » | Factory configured - do not alter | SW1/2 | Off | 
| » | Flash BIOS write protect disabled | SW1/3 | Off | 
| Flash BIOS write protect enabled | SW1/3 | On | |
| » | Floppy drive write protect disabled | SW1/4 | Off | 
| Floppy drive write protect enabled | SW1/4 | On | |
| DIMM CONFIGURATION | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 64MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 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 64 | None | 
| 128MB | (1) 16M x 64 | None | None | None | 
| 128MB | (1) 8M x 64 | (1) 8M x 64 | None | None | 
| 128MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 | 
| DIMM CONFIGURATION (CON’T) | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 136MB | (1) 16M x 64 | (1) 1M x 64 | None | None | 
| 144MB | (1) 16M x 64 | (1) 2M x 64 | None | None | 
| 152MB | (1) 16M x 64 | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 | 
| 160MB | (1) 16M x 64 | (1) 4M x 64 | None | None | 
| 176MB | (1) 16M x 64 | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 | 
| 192MB | (1) 16M x 64 | (1) 8M x 64 | None | None | 
| 192MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 | None | 
| 224MB | (1) 16M x 64 | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 | 
| 256MB | (1) 16M x 64 | (1) 16M x 64 | None | None | 
| 256MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 | 
| 272MB | (1) 16M x 64 | (1) 16M x 64 | (1) 1M x 64 | (1) 1M x 64 | 
| 288MB | (1) 16M x 64 | (1) 16M x 64 | (1) 2M x 64 | (1) 2M x 64 | 
| 320MB | (1) 16M x 64 | (1) 16M x 64 | (1) 4M x 64 | (1) 4M x 64 | 
| 320MB | (1) 16M x 64 | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 | 
| 352MB | (1) 32M x 64 | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 | 
| 384MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 | None | 
| 512MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 | 
| CACHE CONFIGURATION | 
| Note: 256KB/512KB cache is located on the Pentium II CPU. | 
| VIDEO MEMORY CONFIGURATION | ||
| Size | Bank 0 | Bank 1 | 
| 1MB | (2) 256K x 16 | None | 
| 2MB | (2) 256K x 16 | (2) 256K x 16 | 
| CPU SPEED SELECTION | ||||||
| CPU speed | Clock speed | Multiplier | SW1/5 | SW1/6 | SW1/7 | SW1/8 | 
| 233MHz | 66MHz | 3.5x | On | Off | Off | On | 
| 266MHz | 66MHz | 4x | On | On | On | Off | 
| 300MHz | 66MHz | 4.5x | On | Off | On | Off | 
| 333MHz | 66MHz | 5x | On | On | Off | Off |