Gigabyte B450 AORUS ELITE V2 User Manual page 30

& VGA Support
Allows you to select which type of operating system to boot.
Enables legacy option ROM only.
Auto
EFI Driver Enables EFI option ROM. (Default)
This item is configurable only when 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.
(Default)
Partial Initial Part of the USB devices are disabled before the OS boot process completes.
This item is configurable only when 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.
All PS/2 devices are functional in the operating system and during the POST.
Enabled
(Default)
This item is configurable only when Fast Boot is set to Enabled. This function is disabled when Fast Boot
is set to Ultra Fast.
& NetWork Stack Driver Support
Disabled Disables booting from the network. (Default)
Enables booting from the network.
Enabled
This item is configurable only when Fast Boot is set to Enabled or Ultra Fast.
& CSM Support
Enables or disables UEFI CSM (Compatibility Support Module) to support a legacy PC boot process.
Enabled Enables UEFI CSM. (Default)
Disabled Disables UEFI CSM and supports UEFI BIOS boot process only.
& LAN PXE Boot Option ROM
Allows you to select whether to enable the legacy option ROM for the LAN controller. (Default: Disabled)
This item is configurable only when CSM Support is set to Enabled.
& Storage Boot Option Control
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.
Enables legacy option ROM only. (Default)
Legacy Only
This item is configurable only when CSM Support is set to Enabled.
& Other PCI Device ROM Priority
Allows you to select whether to enable the UEFI or Legacy option ROM for the PCI device controller other
than the LAN, storage device, and graphics controllers.
Disabled Disables option ROM.
UEFI Only Enables UEFI option ROM only. (Default)
Legacy Only Enables legacy option ROM only.
This item is configurable only when CSM Support is set to Enabled.
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