Disk II

The Disk II Floppy Disk Subsystem, often rendered as Disk ][, is a 5¼-inch floppy disk drive designed by Steve Wozniak and manufactured by Apple Computer. It went on sale in June 1978 at a retail price of US$495 for pre-order; it was later sold for $595 including the controller card (which can control up to two drives) and cable. The Disk II was designed specifically for use with the Apple II personal computer family to replace the slower cassette tape storage and cannot be used with any Macintosh computer without an Apple IIe Card as doing so will damage the drive or the controller.

Disk II

The Disk II Floppy Disk Subsystem, often rendered as Disk ][, is a 5¼-inch floppy disk drive designed by Steve Wozniak and manufactured by Apple Computer. It went on sale in June 1978 at a retail price of US$495 for pre-order; it was later sold for $595 including the controller card (which can control up to two drives) and cable. The Disk II was designed specifically for use with the Apple II personal computer family to replace the slower cassette tape storage and cannot be used with any Macintosh computer without an Apple IIe Card as doing so will damage the drive or the controller.