Apple IIc Motherboard Apple computer Apple IIc (Computer) Motherboards (Microcomputers) The motherboard for the Apple IIc, Revision 3. This revision adds a 34-Pin memory card expansion slot, and contains Revision 3 of the ROM firmware. The revision is also termed Memory Expansion Apple IIc. Manufacture dates for this revision were 1988-01/1988-08. Apple Computer, Inc. Apple Computer, Inc. Physical Object