62 ASUS Z270-WS BIOS Manual
CSM (Compatibility Support Module)
support the various VGA, bootable devices and add-on devices for better compatibility.
Launch CSM
[Auto] The system automatically detects the bootable devices and the add-
on devices.
[Enabled] For better compatibility, enable the CSM to fully support the non-UEFI
driver add-on devices or the Windows® UEFI mode.
[Disabled] Disable the CSM to fully support the non-UEFI driver add-on devices
or the Windows® UEFI mode.
The following items appear only when you set the Launch CSM to [Enabled].
Boot Device Control
This item allows you to select the type of devices that you want to boot.
[UEFI only]
Boot from Network Devices
This item allows you to select the type of network devices that you want to
launch.
Boot from Storage Devices
This item allows you to select the type of storage devices that you want to
launch.
Boot from PCI-E/PCI Expansion Devices
This item allows you to select the type of PCI-E/PCI expansion devices that
you want to launch.
Secure Boot
® Secure Boot settings and manage its keys to
OS Type
[Windows UEFI
Mode]
This item allows you to select your installed operating system.
Execute the Microsoft® Secure Boot check. Only select
this option when booting on Windows® UEFI mode or other
Microsoft® Secure Boot compliant OS.
[Other OS] ® non-
UEFI mode. Microsoft® Secure Boot only supports Windows®
UEFI mode.
