| Model | Optima 70 |
| Heads | 9 |
| Cylinders | 918 |
| Sectors | 17 |
| Landing Zone | 0 |
| Write Precomp | 0 |
| Reduced Write Current | 0 |
| Capacity | 41 MB |
| Rotational Speed | 0 RPM |
| Physical Interface | 20 Pin and 34 Pin |
| Protocol | MFM |
Core International
AT 30
AT 32
AT 40
AT 63
AT 72
Optima 30
Optima 40
Optima 70