Connector Pinouts
| GROUND | 1 | 2 | ~HD SLCT 3 |
| GROUND | 3 | 4 | ~HD SLCT 2 |
| GROUND | 5 | 6 | ~WRITE GATE |
| GROUND | 7 | 8 | ~CNFG/STATUS |
| GROUND | 9 | 10 | ~XFER ACK |
| GROUND | 11 | 12 | ~ATTENTION |
| GROUND | 13 | 14 | ~HD SLCT 0 |
| Key (no pin) | 15 | 16 | ~SECTOR |
| GROUND | 17 | 18 | ~HD SLCT 1 |
| GROUND | 19 | 20 | ~INDEX |
| GROUND | 21 | 22 | ~READY |
| GROUND | 23 | 24 | ~XFER REQ |
| GROUND | 25 | 26 | ~DRV SLCT 0 |
| GROUND | 27 | 28 | ~DRV SLCT 1 |
| GROUND | 29 | 30 | Reserved |
| GROUND | 31 | 32 | ~READ GATE |
| GROUND | 33 | 34 | ~CMD DATA |
| ~DRV SLCTD | 1 | 2 | ~SECTOR |
| ~CMD COMPL | 3 | 4 | ~ADDR MK EN |
| GROUND | 5 | 6 | GROUND |
| +WRITE CLK | 7 | 8 | -WRITE CLK |
| GROUND | 9 | 10 | +RD/REF CLK |
| -RD/REF CLK | 11 | 12 | GROUND |
| +NRZ WRITE | 13 | 14 | -NRZ WRITE |
| GROUND | 15 | 16 | GROUND |
| +NRZ READ | 17 | 18 | -NRZ READ |
| GROUND | 19 | 20 | ~INDEX |
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