| model number | 33073U4 | 32049U3 | 31536U2 | 30768U1 | |
| capacity | GB | 30.7 | 20.5 | 15.4 | 7.7 |
| buffer size | kB | 512 | 512 | 512 | 512 |
| heads | 4 | 3 | 2 | 1 | |
| areal density | MB/in2 | ||||
| track density | tpi | ||||
| recording density | kbpi | ||||
| average seek | ms | 9.50 | 9.50 | 9.50 | 9.50 |
| rotation speed | RPM | 5400 | 5400 | 5400 | 5400 |
| media rate (max.) | MB/s | 40.80 | 40.80 | 40.80 | 40.80 |