Apple Floppy Drive Disk II for Apple ][
![Apple Floppy Drive Disk II for Apple ][ - photo 1](images/models/95-1.jpg)
![Apple Floppy Drive Disk II for Apple ][ - photo 2](images/models/95-2.jpg)
Photo 1: CC BY-SA 3.0, via Wikimedia Commons (Disk II.jpg) Photo 2: Pratyeka, CC BY-SA 4.0, via Wikimedia Commons (Apple-disk2-5.25-diskdrive-and-original-box.jpg)
Floppy disk drive, 1978, Apple. The Disk II is the 5.25 inch floppy disk drive designed by Steve Wozniak for the Apple II: with a controller card of only eight chips that did most of the work in software, it was far cheaper than competing drives and turned the Apple II into a serious computer.
| Years | June 1978 to 1984 |
|---|---|
| Manufacturer | Apple Computer Inc. (US), Shugart SA-400 mechanism |
| Compatibility | Apple II, II Plus, IIe (via controller card in a slot) |
| Media | 5.25" single-sided floppy disk, 140 KB (35 tracks of 16 sectors with DOS 3.3, 13 sectors with DOS 3.1 and 3.2) |
| Interface | Disk II controller card, 2 drives per card |
| Operating system | Apple DOS 3.1, 3.2, 3.3, ProDOS |
| Price (1978) | US$495 pre-order, then US$595 with controller card |
Documentation
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