| IRQ # | Description |
| 2 | Cascades IRQ 8-15. Not a good choice unless
you have no other option. |
| 3 | Com. Port 2 |
| 4 | Com. Port 1 |
| 5 | Printer Port or Sound Card |
| 7 | Printer Port or Sound Card |
| 9 | Known on some cards as IRQ 2. (See IRQ 2) |
| 10 | Some VGA cards |
| 11 | Unassigned |
| 12 | PS/2 Mouse or Unassigned |
| 14 | First IDE Hard disk controller (unless this
is LRP, you probably need this) |
| 15 | Second IDE Hard Disk controller or Unassigned |
