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All-in-One · 1993ObsoleteRare · 65
Macintosh LC 520
M1640 · Performa all-in-one
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Identifiers
| Order number | M1640 |
Reference
| Announced | 1993-06-28 |
| Discontinued | 1994-02-02 |
| Max supported OS | Mac OS 7.6.1 |
| Design era | Performa all-in-one |
Configurations
| Colors | Platinum |
| CPU | Motorola 68030 @ 25 MHz |
| Memory | 5 MB, 36 MB (max) |
| Storage | 80 MB SCSI HDD, 160 MB SCSI HDD, BlueSCSI |
| Graphics | Built-in video (512 KB VRAM, expandable to 1 MB) |
| Display | 14″ Sony Trinitron color CRT (built-in, 640×480) |
| Operating system | System 7.1, System 7.5, Mac OS 7.6.1 |
| Removable media | 2× CD-ROM (caddy-load), 1.4 MB floppy |
Physical
| Ports & connectivity | ADB (2) · DB-25 SCSI · 2× RS-422 Mini-DIN-8 serial · 3.5mm audio in/out · Comm slot · LC PDS |
| Dimensions (W×H×D) | 343 × 455 × 419 mm |
| Weight | 18.4 kg |
Known quirks
- First of the LC 500-series all-in-ones — its 14″ Trinitron AIO case was later reused by the Macintosh TV and the PowerPC Performa 5200
- 68030 @ 25 MHz with 5 MB RAM, maxing at just 36 MB via a single 72-pin SIMM
- Caddy-loading 2× CD-ROM and built-in stereo speakers — aimed at education and the home
- 68030 caps it at Mac OS 7.6.1 (no 8.x without a 68040 upgrade)
- PRAM battery leak and analog/logic-board capacitor failures common — recap recommended