|Info:||Commodore 1551 floppy disk unit|
The Commodore 1551 or 1551 is a floppy disk drive for the budget 264-series of home computers. Unlike its notoriously sluggish forerunner, the 1541 floppy disk C64 unit, the 1551 uses an included cartridge instead of the serial port. The cartridge is recognized by the Plus/4 Kernal. This made data transfer four times faster (and even faster when used with disk accelerators).
Its attractive styling matches the dark design of the Plus/4. It uses regular 5 1/4-inch disks but was not compatible with the older 1541 model.
Owners could cobble together two 1551s for a dual-floppy solution, though it needed a bit of tricky hardware hacking.