Asus P4S8X-X - Manual (Page 54)

2-22 Chapter 2: BIOS information
2.4.3.2 PCI IRQ Resource Exclusion
IRQ XX Reserved [No/ICU]
These fields indicate whether or not the displayed IRQ for each field is being used
by a legacy device. The setting [No/ICU] for an IRQ field indicates that this
particular IRQ is NOT required by a legacy device. Set the IRQ field to [Yes] if you
install a legacy device that requires a unique IRQ. Configuration options: [No/ICU]
[Yes]
2.4.3.1 Onboard PCI Devices Control
Onboard LAN [Enabled]
This field allows you enable or disable the onboard LAN.
Configuration options: [Disabled] [Enabled]
Onboard LAN Boot ROM [Disabled]
This field allows you enable or disable the onboard LAN Boot ROM feature.
Configuration options: [Disabled] [Enabled]
Onboard AC97 Audio Controller [Auto]
This field allows you to disable the onboard AC97 audio controller or set to the
default [Auto] for optimum performance. Configuration options: [Disabled] [Auto]