PC IBM-specific systems
Upgrades whose evidence names a particular IBM PC model.
Choose a computer, platform, or interface
| Computer, platform, or interface | Introduced | Known as | Products |
|---|---|---|---|
| IBM Personal Computer 5150 The original IBM PC with 8-bit ISA expansion slots and external floppy-oriented storage. | 1981 | IBM PC, Model 5150 | 4 |
| IBM Personal Computer XT 5160 IBM's hard-disk-equipped PC successor with eight 8-bit ISA expansion slots. | 1983 | IBM XT, Model 5160 | 4 |