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CSM Configuration
This section configures the Compatibility Support Module (CSM) settings.
CSM Support
Enable or disable the CSM support.
Boot option filter
This option sets the boot options: Legacy, UEFI, or both. This setting will affect the
available boot options under the "Boot Option Priorities" in the "Boot" menu.
Launch PCI-E NIC PXE
Enable or disable the execution of PXE Option ROM through network interfaces. If you
choose to use the UEFI boot, configure the "Network Stack Configuration" menu too.
Video
Choose to allow the execution of UEFI only, Legacy Video Option ROM or none.
Chapter 7 BIOS Setup
Chapter 7
USB Configuration
This section configures the parameters of USB devices.
Legacy USB Support
Enabled
Enable legacy USB support.
Disabled
Keep USB devices available only for EFI applications.
Auto
Disable the support for legacy USB devices when no USB devices are connected.
XHCI Hand-off
Enable this option for operating systems that do not support Extensible Host Control-
ler Interface (xHCI) Hand-off. The XHCI ownership change will be claimed by the
XHCI driver.
EHCI Hand-off
This item is for operating systems that do not support Enhanced Host Controller In-
terface (EHCI) Hand-off. When it is enabled, EHCI ownership change will be claimed
by the EHCl driver.
USB Mass Storage Driver Support
Enable or disable the the USB Mass Storage Driver.
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