Macintosh IIsi (1990)
Macintosh IIsi (1990): a scaled-down IIci in a smaller case with fewer expansion options: 68030 at 20 MHz, built-in video, and the first Mac with built-in audio recording.
Specs
| Release | 1990-10-15 |
| Chip | 68030 · 20 MHz |
| RAM | 2, 3 or 5 MB standard (1 MB onboard) · up to 65 MB (4 30-pin SIMMs, 100 ns) |
| Ports | 1 × NuBus/PDS · 1 × ADB · SCSI DB-25 · DB-15 · DB-19 |
| System | 6.0.7 → 7.6.1 |
| Dimensions | 102 × 315 × 378 mm |
| Weight | 10.0 lbs (4.5 kg) |
| ROM | 512 KB |
| Storage (detail) | 40, 80 or 160 MB SCSI hard drive · 1.44 MB FDHD floppy |
| VRAM | Built-in video: 64–320 KB (uses main RAM) |
| Video (detail) | Built-in video on the motherboard; single display |
| Expansion slots | 1 × PDS · NuBus via Apple’s optional adapter (which also adds the 68882 FPU) |
Launch
Apple introduced it on October 15, 1990 and it was sold until March 15, 1993. It was a scaled-down IIci in a smaller case with fewer expansion options, but also the first Mac with built-in audio recording, something the IIci lacked. Dates and data: EveryMac; the introduction is also recorded in Apple Support and Apple’s Tech Info Library.
Marketing
The affordable Macintosh II: built-in video for a single display and one PDS slot, expandable to NuBus with Apple’s optional adapter, which also added the 68882 FPU. With launch prices of $3,770 and $4,570 in the US depending on configuration, it cost less than half of a IIci. (EveryMac.)
Flaws and fixes
Apple documents no model-specific defects in the sources consulted. Limits that do appear in its spec sheet: 2, 3 or 5 MB of standard RAM (1 MB soldered onboard), expandable to 65 MB using 4 30-pin SIMM slots (100 ns); 24- or 32-bit addressing; the built-in video uses main RAM.
Indicative price
New (launch, US): $3,770–$4,570 depending on configuration · EveryMac
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Updated: October 29, 2026 · Sources: Apple Soporte · Apple Tech Info Library · EveryMac · Compare this product