BESTEK BNX-I81, User Manual

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CSM Parameter
Launch CSM
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.
Boot option filter
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
ROM. (Default)

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.
This item is configurable only when Launch CSM is set to Enabled .
Launch PXE OpROM policy
Allows you to select whether to enable the UEFI or legacy option ROM for the LAN controller.

Do not launch: Disables option ROM. (Default)

Legacy only: Enables legacy Option ROM only.
This item is configurable only when Launch CSM is set to Enabled .
Launch Storage OpROM policy
Allows you to select whether to enable the UEFI or legacy option ROM for the storage device controller.

Do not launch: Disables option ROM.

Legacy Only: Enables legacy option ROM only. (Default)

UEFI Only: Enables UEFI option ROM only.
This item is configurable only when Launch CSM 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.

UEFI OpROM: Enables UEFI option ROM only. (Default)

Legacy OpROM: Enables legacy option ROM only.
This item is configurable only when Launch CSM is set to Enabled .
Network stack
Disables or enables booting from the network to install a GPT format OS, such as installing the OS from the
Windows Deployment Services server. (Default: Disabled)