Producer: IBM - Category: Personal Computer
Photos: Photo 1 (small),Photo 2 (small),Photo 3 (small),Photo 4 (small)
Personal computer, 1989, IBM. The PS/2 Model 55 SX is a 386SX desktop with the Micro Channel architecture.
| Year | 1989 |
| Manufacturer | International Business Machines Corporation (IBM) |
| Model | PS/2 Model 55 SX |
| Processor / coprocessor | Intel 80386SX (32 bit) at 16 MHz / optional 80387 maths coprocessor; 16 bit Micro Channel bus |
| RAM | 1 to 4 MB (72 pin DRAM SIMM, 85 ns, with parity) |
| ROM | 128 KB |
| Storage | 3.5" floppy disk drive (1.44 MB), hard disk (30 or 60 MB) |
| Keyboard | 101 keys |
| Video interface | colour (VGA) |
| Interfaces | RS232-C and Centronics (DB-25), PS/2 keyboard and mouse |
| Expansion | 3 MCA (Micro Channel) slots |
| Dimensions | 406 (W) x 397 (D) x 102 (H) mm |
| Weight | system 8.65 kg, keyboard 2.5 kg |
| Operating systems | DOS 3.3 or later, OS/2 SE 1.1, OS/2 EE 1.1 |
| Power | 90 W |
| Price (September 1990) | CHF 4,650 with 2 MB RAM, 30 MB hard disk, monitor 8513 and keyboard |
