The internal 3.5 drive controller was toast, so I had to replace it to get the drive to work correctly. This is a wonderful machine, very fast and has an smart drive that allows it to interface easily with the FujiNet networking device being developed today. The only issue I have with the IIc Plus is that most Apple II software is written for 5 1/4" drives. The system is thus most useful with an external 5 1/4" drive attached. It's not possible to use the FUJINET with an external drive attached.
FUJINET for Apple II works best on the II GS and IIc plus. Click image for larger view.