I think the Amiga Int. 1200 came with them, but I am not sure. If you A1200 is badge as a Commorore system then it sounds like someone tried to put a PC drive in it. The best way to check is to pull out the drive and see if it was built after the 1200. If it is a newer Amiga int. version then they were known to have lots of problems in the drives. Best bet is to use one of the drives out of your other machines and see if the internal drive connector works at all. You can get a keywalda too that will let the PC drive work as a Amiga 880k drive. Teac are know to have problems with that too though.