Gigabyte A520M DS3H AC User Manual - Page 35
VGA Support, LAN PXE Boot Option ROM, Storage Boot Option Control, Other PCI Device ROM Priority
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&& VGA Support Allows you to select which type of operating system to boot. Auto Enables legacy option ROM only. 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 or Ultra Fast. 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. Enabled All PS/2 devices are functional in the operating system and during the POST. (Default) This item is configurable only when Fast Boot is set to Enabled or Ultra Fast. This function is disabled when Fast Boot is set to Ultra Fast. && NetWork Stack Driver Support Disabled Disables booting from the network. (Default) Enabled Enables booting from the network. 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. Disabled Disables UEFI CSM and supports UEFI BIOS boot process only. Enabled Enables UEFI CSM. (Default) && 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. (Default) Legacy Only Enables legacy option ROM 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. - 35 -