Sony PCV-RX480DS - Manual (Page 105)

CMOS Setup Options 91
PCI Configuration Sub-Menu
Slot 1 IRQ [Auto]
to NA
Slot 3 IRQ 3
4
5
7
9
10
11
12
14
15
VGA BIOS Sequence [PCI/AGP]
AGP/PCI
Onboard LAN Boot ROM [Disabled]
Enabled