[ IDENTIFIED PC FLOPPY DRIVE ]
TEAC FD-55A 5.25-inch PC floppy drive
The FD-55A is the single-sided, 40-track 48-TPI member of TEAC's FD-55 family. Do not apply double-sided FD-55B values or HD-family settings to this model.
Documented specifications
| Density / capacity | Single-sided, 40 tracks at 48 TPI; FM single-density or MFM double-density media. PC formats are typically 160 KB (8 sectors) or 180 KB (9 sectors); not a double-sided 360 KB drive. |
|---|---|
| Interface | 34-pin Shugart/PC-compatible signal edge connector; separate 4-pin +5 V/+12 V power. |
| Data rate / speed | 125 kbit/s FM and 250 kbit/s MFM; 300 rpm standard rotation. |
| Jumpers / drive select | FD-55 option block supports DS0–DS3 and interface/LED options. Configure the exact DS input and ready/disk-change functions per the model's installation manual; terminate only at the bus end. |
| Dimensions / power | 146 × 41 × 203 mm (W×H×D), half-height; +5 V 0.38 A typical (0.6 A max), +12 V 0.25 A typical (0.9 A max); 4-pin power connector. |
| PC controller compatibility | Usable with a PC floppy controller at 250 kbit/s MFM for supported 40-track formats; configure one-sided geometry. It cannot provide a second read/write head or 360 KB double-sided geometry. |
Preservation notes
Label this drive explicitly as single-sided and 40-track. Preserve any surviving format settings and do not attempt head alignment with double-sided reference media; retain raw disk images and acquisition notes separately from filesystem copies.
Manuals & archive sources
- TEAC FD-55 family specificationsManufacturer sheet distinguishes FD-55A by sides, track density, speed, and electrical requirements.
- TEAC FD-55 maintenance manual (1985)Primary service reference for configuration and preservation-safe maintenance.