My UDC has 2 19 pin connectors on ribbon cables. I understand that earlier versions also had 20 pin connectors for 5.25" drives. My card runs a 5.25" with no problems (apart from giving up on errors quicker than a Disk ][ under ProDOS). -- David Wilson +61 42 213802 voice, +61 42 213262 fax Dept Comp Sci, Uni of Wollongong david@cs.uow.edu.au