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Drive · 1986ObsoleteRare · 70
Apple Hard Disk 20SC
M2604 · Apple HD SCSI
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Identifiers
| Order number | M2604 |
Reference
| Original price | $1,299 |
| Announced | 1986-09-15 |
| Discontinued | 1989-06-01 |
| Max supported OS | Mac OS 7.5.5 |
| Design era | Apple HD SCSI |
Configurations
| Colors | Platinum |
| Drive type | 3.5″ SCSI HDD |
| Capacity | 20 MB |
| Interface | SCSI-1 (50-pin Centronics) |
| Mechanism | Seagate ST225N |
| Compatibility | System 3.0+, System 7.5.5 |
Physical
| Ports & connectivity | SCSI-1 (Centronics 50-pin) · AC power · Termination switch (hardware) |
| Dimensions (W×H×D) | 280 × 88 × 340 mm |
| Weight | 5.4 kg |
Known quirks
- Requires SCSI termination on last device in chain
- Seagate ST225N mechanism — very loud
- Power supply caps commonly leak
- SCSI daisy-chain limited to 7 devices