Can anyone tell me the last IIc that needed and motherboard update to use a 3.5" UniDisk? I used to have the number (When I had mine updated in 1988) but lost it . My local Apple rep is no help, They never sold an Apple II. They just bought the dealer who did. ---Geof Gonter--- FIDONet 1:325/501 In the shadow of Vermont's Mount Mansfield in dairy and maple syrup country.