IBM CORPORATION
PS/2 MODEL 80 (8580-041, 071)
| Processor | 80386DX | 
| Processor Speed | 16/20/25MHz | 
| Chip Set | None | 
| Max. Onboard DRAM | 8MB | 
| Cache | None | 
| BIOS | IBM | 
| Dimensions | 355mm x 254mm | 
| I/O Options | Serial port, parallel port, pointing device connector, video port, video adapter slot, floppy drive interface | 
| NPU Options | 80387 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Power supply | J1 | Serial port | J6 | 
| Floppy drive interface | J2 | Parallel port | J7 | 
| Battery/speaker | J3 | Pointing device | J8 | 
| Video adapter slot | J4 | Keyboard | J9 | 
| Video port | J5 | ||
| DRAM CONFIGURATION | ||
| Size | Bank 0 | Bank 1 | 
| 1MB | (1) 256K x 36 | NONE | 
| 2MB | (1) 256K x 36 | (1) 256K x 36 | 
| 4MB | (1) 1M x 36 | NONE | 
| 8MB | (1) 1M x 36 | (1) 1M x 36 | 
| Note:Onboard memory does not have to be installed in order to use memory expansion cards. | ||