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Drive · 1986ObsoleteRare · 70
Macintosh 800K External Drive
M0131 · Apple external floppy
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Identifiers
| Order number | M0131 |
Reference
| Discontinued | Still shipping |
| Max supported OS | System 7.5.5 |
| Design era | Apple external floppy |
Configurations
| Colors | Platinum |
| Drive type | 3.5″ 800K floppy (double-sided) |
| Capacity | 800 KB double-sided |
| Interface | DB-19 floppy port |
| Mechanism | Sony 3.5″ variable-speed GCR mechanism |
| Compatibility | System 3.0+ (HFS) |
Physical
| Ports & connectivity | DB-19 floppy port |
Known quirks
- Introduced alongside the Macintosh Plus in January 1986 — quieter and noticeably faster than the M0130
- Sony double-sided mechanism with variable-speed GCR to reach the full 800 KB
- Reads older 400 KB single-sided disks for backward compatibility
- Needs 128K ROM; a 64K-ROM Mac can use it only after loading System software from a Hard Disk 20