Preserved models > HP and Compaq
Producer: HP and Compaq - Category: Storage
Floppy disk drive, 1982, Hewlett-Packard. The 9121 is a dual 3.5 inch single-sided double-density floppy disk unit for the HP Series 80 and other HP-IB computers.
| Year | 1982 |
| Manufacturer | Hewlett-Packard |
| Model | 9121 |
| Capacity | 2 x 286 KB |
| Media | 3.5 inch, single side, 70 tracks per surface, 135 tracks per inch |
| Sectors per track | 16 of 256 bytes |
| Average access time | 420 ms |
| Rotation | 600 rpm |
| Encoding | MFM |
| Interface | HP-IB |
| Power | 67 W |
| Price (1982) | $1,750 |