Table 3. Configuring the NIC Cards: Standard IRQ Line Uses

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