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Macintosh IIci

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Revision as of 19:38, 26 November 2019 by Netfreak (talk | contribs)
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The IIci is a popular model from the Macintosh II line due to the small form factor and upgrade options. Unlike the IIcx, the IIci features on-board video so you don't have to use up one of the NuBus slots for video. The IIci is a 32-bit clean Macintosh.

The case design is shared with the Macintosh Quadra 700 though altered to stand upright as a mini-tower computer.

General Information


Powered by a 25MHz Motorola 68030 processor with 68882 math co-processor. The data bus is also 25MHz.


There is no onboard memory on the IIci, but you have 8 slots available for 30-pin SIMMs with a maximum capacity of 128MB.

Cache Card

Iici cache.jpg

The IIci has a special slot on the board for a cache card. No other Macintosh II model had this cache slot, though third-party cards such as the Applied Engineering QuickSilver offered cache via PDS. Similar to the board itself, the cache card will need to be re-capped due to the original ones failing from age.

The cache card provides 32k of L2 cache and is recommended for achieving maximum performance.


List of some potential upgrade cards usable in the IIci:


  • Set the system date to 9/20/89 (the release date of the IIci), and set your monitor to 8-bit color. Restart while holding Command-Option-c-i. You'll see a color picture of the IIci design team. Click the mouse to continue.
  • As the video system in the IIci is said to be the same as found in the Macintosh IIsi you may need a sync-on-green compatible monitor.



Quadra 700.mac iicx.iici.png


Capacitor replacement (power supply unit)

The capacitors inside the PSU are at the age where they have a higher probability of failing and/or leaking. See below for a list of capacitors you may want to replace.

NOTE: these values may differ if there happens to be multiple revisions of a certain model.


  • 2 x 470uf 200v
  • 1 x 10uf 25v
  • 1 x 10uf 50v
  • 1 x 2200uf 25v
  • 1 x 47uf 100v
  • 2 x 2200uf 10v
  • 2 x 1000uf 16v
  • 1 x 2200uf 16v
  • 1 x 470uf 16v
  • 1 x 2.2uf 50v
  • 1 x 47uf 16v
  • 1 x 0.22uf 250v film
  • 1 x 0.1uf 250v film
  • 1 x 0.04uf 250v film
  • 2 x 4700pf 250v film
  • 1 x 3300pf 250v film

Photo Gallery

See Also

External Resources