Apple ProFile (1981)
Apple ProFile (1981): 5 MB external hard drive (Seagate ST-506 mechanism) with its own controller; a 10 MB model followed.
Specs
| Reference | Apple ProFile |
| Launch / discontinued | 1981-09 / 1986-09 |
| CPU | — |
| Memory | — |
| Storage | 5 MB (later 10 MB) |
| Display / graphics | — |
| Expansion / ports | Proprietary parallel interface (card in Apple III/II; port on Lisa) |
| US launch price | USD 3,499 |
Launch
Launched in September 1981 at USD 3,499 as Apple III storage; later adapted to the Lisa and the Apple II. Discontinued in September 1986.
Marketing
It was Apple's first hard drive: 5 MB when floppies held 143 KB, meant for business databases and accounting.
Flaws and fixes
Its price was very high and the first-generation ST-506 mechanism was noisy and shock-sensitive. It depended on proprietary cards or ports on each computer.
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Updated: October 24, 2026 · Sources: Wikipedia, Wikipedia · Compare this product