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& VGA Support
Allows you to select which type of operating system to boot.
Auto Enables legacy option ROM only.
Fast Boot is set to Enabled or Ultra Fast.
& USB Support
Disabled All USB devices are disabled before the OS boot process completes.
Full Initial All USB devices are functional in the operating system and during the POST.
Fast Boot is set to Enabled. This function is disabled when Fast Boot
is set to Ultra Fast.
& PS2 Devices Support
Disabled All PS/2 devices are disabled before the OS boot process completes.
Fast Boot is set to Enabled. This function is disabled when Fast Boot
is set to Ultra Fast.
&
Enabled Enables booting from the network.
Fast Boot is set to Enabled or Ultra Fast.
& Windows 8 Features
& CSM Support
Never Disables UEFI CSM and supports UEFI BIOS boot process only.
Windows 8 Features is set to Windows 8 or Windows 8 WHQL.
& Boot Mode Selection
Allows you to select which type of operating system to boot.
UEFI and Legacy
Allows booting from operating systems that support legacy option ROM or UEFI option
Legacy Only Allows booting from operating systems that only support legacy Option ROM.
UEFI Only Allows booting from operating systems that only support UEFI Option ROM.
CSM Support is set to Always.
&
CSM Support is set to Always.
&
Allows you to select whether to enable the UEFI or legacy option ROM for the storage device controller.
Disabled Disables option ROM.
UEFI Only Enables UEFI option ROM only.
CSM Support is set to Always.