Running original HD. Fairly loud, but seems to be running well. Only able to get it to output video on Macintosh Color Display CRT. Tries using Eizo LCD that supports sync on green and it did not work.

The IIsi was Apple's attempt to bring the modular Mac down in price without entirely gutting its capabilities. Running at 20 MHz with a single NuBus-via-PDS slot, it was slower than the IIci but cost considerably less. A popular choice for schools and small businesses that needed Mac expandability on a limited budget.

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• EveryMac