Asus P4B-MX - Onboard Lan; Onboard PCI Devices Control

4-22 Chapter 4: BIOS Setup
4.4.3.1 Onboard PCI Devices Control
Onboard LAN
This parameter allows you to enable or disable the onboard LAN
controller. Set this field to [Enabled] if you wish to use the LAN feature. Set
this field to [Disabled] if you installed a PCI LAN card. The LAN card
includes a controller chipset.