46 Using the System Setup Program and UEFI Boot ManagerPCI IRQ Assignments ScreenInternal USB Port 1(On default)Enables or disables the internal USB port.Internal USB Port 2(On default)Enables or disables the internal USB port.Embedded NIC1 andNIC2(Enabled default)Enables or disables the OS interface of the two embeddedNICs. (The NICs may also be accessed through thesystem’s management controller.)Embedded Gb NICx(NIC1 default: Enabledwith PXE;Other NICs: Enabled)Enables or disables the embedded NICs. Options areEnabled, Enabled with PXE, and Enabled with iSCSIBoot. PXE support allows the system to boot from thenetwork.MAC Address Displays the MAC address for the NIC.OS Watchdog Timer(Disabled default)Sets a timer to monitor the operating system for activity,and aids in recovery if the system stops responding.When Enabled, the operating system is allowedto initialize the timer. When Disabled, the timer isnot initialized.NOTE: This feature is usable only with operating systemsthat support WDAT implementations of the AdvancedConfiguration and Power Interface (ACPI) 3.0b specification.I/OAT DMA Engine(Disabled default)Enables or disables the I/O acceleration technology(I/OAT). This feature should only be enabled if thehardware and software support I/OAT.Embedded VideoController(Enabled default)Displays the total amount of video memory available inthe embedded video controller.Option DescriptionEmbedded X-treme PCIAdapterUse the <+> and <-> keys to manually select an IRQfor a given device, or select Default to allow the BIOS toselect an IRQ value at system startup.Option Description
