Asus P4SGL-VM - Manual (Page 38)

2-16 Chapter 2: Hardware information
2.6.3 PCI slots
There are three 32-bit PCI slots in this motherboard. The slots support PCI
cards such as a LAN card, SCSI card, USB card, and other cards that
comply with PCI specifications. The following figure shows a LAN card
installed on a PCI slot.
IRQ assignments for this motherboard
A B C D
PCI slot 1 — shared — —
PCI slot 2 — — shared —
PCI slot 3 — — — shared
Onboard USB controller HC0 — — — shared
Onboard USB controller HC1 — — — shared
Onboard audio — — shared —
Onboard LAN — — shared —
Onboard VGA shared — — —
When using PCI cards on shared slots, ensure that the drivers support
“Share IRQ” or that the cards do not need IRQ assignments.
Otherwise, conflicts will arise between the two PCI groups, making the
system unstable and the card inoperable.