| PIN | DESCRIPTION | PIN | DESCRIPTION | PIN | DESCRIPTION | PIN | DESCRIPTION |
|---|---|---|---|---|---|---|---|
| 1 | +12v | 21 | -DB(7) | 41 | +12v Ground | 61 | Ground |
| 2 | +12v | 22 | -DB(6) | 42 | +12v Ground | 62 | Ground |
| 3 | +12v | 23 | -DB(5) | 43 | +12v Ground | 63 | Ground |
| 4 | +12v | 24 | -DB(4) | 44 | +12v Ground | 64 | Ground |
| 5 | Reserved / NC | 25 | -DB(3) | 45 | Reserved N/C | 65 | Ground |
| 6 | Reserved / NC | 26 | -DB(2) | 46 | Reserved N/C | 66 | Ground |
| 7 | -DB(11) | 27 | -DB(1) | 47 | Ground | 67 | Ground |
| 8 | -DB(10) | 28 | -DB(0) | 48 | Ground | 68 | Ground |
| 9 | -DB(9) | 29 | -DB(P1) | 49 | Ground | 69 | Ground |
| 10 | -DB(8) | 30 | -DB(15) | 50 | Ground | 70 | Ground |
| 11 | -I/O | 31 | -DB(14) | 51 | Ground | 71 | Ground |
| 12 | -REQ | 32 | -DB(13) | 52 | Ground | 72 | Ground |
| 13 | -C/D | 33 | -DB(12) | 53 | Ground | 73 | Ground |
| 14 | -SEL | 34 | +5v | 54 | Ground | 74 | +5v Ground |
| 15 | -MSG | 35 | +5v | 55 | Ground | 75 | +5v Ground |
| 16 | -RST | 36 | +5v | 56 | Ground | 76 | +5v Ground |
| 17 | -ACK | 37 | SYNC | 57 | Ground | 77 | LED |
| 18 | -BSY | 38 | RMT_START | 58 | Ground | 78 | DLYD_START |
| 19 | -ATN | 39 | SCSI ID (0) | 59 | Ground | 79 | SCSI ID (1) |
| 20 | -DB(P0) | 40 | SCSI ID (2) | 60 | Ground | 80 | SCSI ID (3) |