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Commodore International Historical Society on Twitter: "We are family. All of these 5.25" #commodore disk drives share the same outer shell, but some of them are quite different on the inside. Parallel
Commodore Floppy Drive 1551 (c16/Plus4) | nIGHTFALL Blog / RetroComputerMania.com
Converting a Commodore 1541 or 1570 Drive into a 1551 – pagetable.com