H81M-C User's Manual
Page 64
...Disabled] [Enabled] [Disabled] Allows the option ROMs to trap Interrupt 19. Configuration options: [Legacy OPROM first] [UEFI driver first] [Ignore] 2-36 Chapter 2: Getting started Launch CSM [Enabled] [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 state of the NumLock to [Off]. 2.8.4 Wait for 'F1' If Error [Enabled] When this function. ...
...Disabled] [Enabled] [Disabled] Allows the option ROMs to trap Interrupt 19. Configuration options: [Legacy OPROM first] [UEFI driver first] [Ignore] 2-36 Chapter 2: Getting started Launch CSM [Enabled] [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 state of the NumLock to [Off]. 2.8.4 Wait for 'F1' If Error [Enabled] When this function. ...