| DB25 Male | Centronics 36 Male |
| (A500/2000/3000/4000) | (Scanner) |
2: D0 |
2: D0 |
| 3: D1 | 3: D1 |
| 4: D2 | 4: D2 |
| 5: D3 | 5: D3 |
| 6: D4 | 6: D4 |
| 7: D5 | 7: D5 |
| 8: D6 | 8: D6 |
| 9: D7 | 9: D7 |
| 10: ACK* | 10: ACKNLG* |
| 11: BUSY | 11: BUSY |
| 12: POUT | 36: DIR |
| 13: SEL | 1: STROBE* |
| 16: Reset* | 31: INIT* |
| 22: GND | 30: GND |
| 25: GND | 33:GND |
ASDG/ER-Style Cable
| DB25 Male | Centronics 36 Male |
| (A500/2000/3000/4000) | (Scanner) |
1: Strobe* |
NC: |
| 2: D0 | 5: D3 |
| 3: D1 | 8: D6 |
| 4: D2 | 7: D5 |
| 5: D3 | 4: D2 |
| 6: D4 | 2: D0 |
| 7: D5 | 9: D7 |
| 8: D6 | 3: D1 |
| 9: D7 | 6: D4 |
| 10: ACK* | 10: ACKNLG* |
| 11: BUSY | 11: BUSY |
| 12: POUT | 1: STROBE* |
| 13: SEL | 36: DIR |
| 14: +5V | 14: NC |
| 15: NC | 32: NC |
| 16: RESET* | 31: INIT* |
| 17: GND | NC: |
