| Model | D-526 |
| Heads | 8 |
| Cylinders | 306 |
| Sectors | 17 |
| Landing Zone | 0 |
| Write Precomp | 128 |
| Reduced Write Current | 128 |
| Capacity | 21 MB |
| Rotational Speed | 0 RPM |
| Physical Interface | 20 Pin and 34 Pin |
| Protocol | MFM |
Disctron
D-503
D-504
D-506
D-507
D-509
D-512
D-513
D-514
D-518
D-519
D-526