User’s Manual
2.6.9 PCI Subsystem Settings
SR-IOV Support [Disabled]
This item allows you to enable or disable the Single Root IO Virtualization support if your
system has SR-IOV capable PCIe devices. Conguration options: [Disabled] [Enabled]
2.6.10 USB Configuration
The items in this menu allow you to change the USB-related features.
The USB Devices item shows the auto-detected values. If no USB device is detected, the
item shows None.
Legacy USB Support [Enabled]
[Enabled] Your system supports the USB devices in legacy operating systems.
[Disabled] Your USB devices can be used for BIOS setup only and cannot be
recognized in the boot devices list.
[Auto] Your system automatically detects the presence of USB devices at startup.
If any USB devices are detected, the legacy USB support is enabled.
XHCI Hand-off
[Enabled] Enables the support for operating systems without an XHCI
hand-off feature.
[Disabled] Disables the XHCI Hand-off support.
USB single port control
The subitems in this menu allow you to set the USB Port Disable Override features.
U31G1_1~10 [Enabled]
Allows you to enable or disable the USB3.0 ports individually. Conguration options:
[Disabled] [Enabled]
USB11~13 [Enabled]
Allows you to enable or disable the USB2.0 ports individually. Conguration options:
[Disabled] [Enabled]
2.6.11 Network Stack Configuration
Network Stack [Disabled]
This item allows user to disable or enable the UEFI network stack. Conguration options:
[Disabled] [Enabled]
The following two items appear only when you set the previous item to [Enabled].
Ipv4 / Ipv6 PXE Support [Disabled]
This item allows you to enable or disable the Ipv4/Ipv6 PXE wake event. Conguration
options: [Disabled] [Enabled]
2-36 Chapter 2: Getting started