Macintosh Quadra 900

Compared with the Macintosh IIfx, this model moved to the Motorola 68040 at 25 MHz and to Apple's first mid-tower case. It has five NuBus slots and a Processor Direct Slot, and it was one of the first two Macs with built-in Ethernet. A three-position key lock can disable the floppy drive and ADB port in its Secure setting.

Model number

M4200

Released

21 October 1991

Order number

M4210LL/A

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