| CONNECTIONS |
| Function | Location |
| 20-pin data cable connector-drive 3 | CN1 |
| 20-pin data cable connector-drive 2 | CN2 |
| 20-pin data cable connector-drive 1 | CN3 |
| 20-pin data cable connector-drive 0 | CN4 |
| 34-pin control cable connector-hard drive | CN5 |
| 4-pin connector-drive active LED | CN6 |
| Floppy drive daughter board connector | CN7 |
| Memory expansion board cable connector | CN8 |
| Floppy drive daughter board connector | CN10 |