Asus A55M-A/USB3 - Manual (Page 70)

2-28 ASUS A55M-A Series
2.7.10 Secure Boot
This option allows you to configure the Secure Boot related parameters.
OS Type [Other OS]
Configuration option: [Windows UEFI mode] [Other OS]
Secure Boot Mode [Standard]
This item appears only when you set the OS Type to [Windows UEFI]. Configuration option:
[Standard] [Custom]
The following items appear when Secure Boot Mode is set to [Custom].
Key Management
Manage the Secure Boot Keys (PK, KEK, DB, DBX)
Install default Secure Boot Keys
Configuration options: [Yes] [No]
Platform Key (PK)
Load PK from File
Configuration options: [Ok]
Copy PK to File
Configuration options: [Ok]
Delete the PK
Configuration options: [Yes] [No]
2.7.9 CSM Parameters
This option controls whether or not CSM (Compatibility Support Module) will be launched.
Launch CSM [Auto]
Configuration option: [Auto] [Enabled] [Disabled]
The following four items appear only when you set Launch CSM to [Enabled].
Boot Device Control [UEFI and Legacy OpROM]
Configuration option: [UEFI and Legacy OpRom] [Legacy OpROM only] [UEFI only]
Boot from Network Devices [Legacy OpROM first]
Configuration option: [Legacy OpROM first] [UEFI driver first] [Ignore]
Boot from Storage Devices [Legacy OpRom first]
Configuration option: [Both, Legacy OpROM first] [Both, UEFI driver first] [Legacy
OpROM first] [UEFI driver first] [Ignore]
Boot from PCIe/PCI Expansion Devices [Legacy OpROM first]
Configuration option: [Legacy OpROM first] [UEFI driver first]