Gigabyte GA-A75N-USB3 User Manual page 43

Onboard Audio Function
&
Enables or disables the onboard audio function. (Default: Enabled)
If you wish to install a 3rd party add-in audio card instead of using the onboard audio, set this item to
Disabled.
Onchip USB 3.0 Controller
&
Enables or disables the integrated USB 3.0 controllers. (Default: Enabled)
USB Controllers
&
Enables or disables the integrated USB controllers. (Default: Enabled)
Disabled will turn off all of the USB functionalities below.
USB Legacy Function
&
Allows USB keyboard to be used in MS-DOS. (Default: Enabled)
USB Storage Function
&
Determines whether to detect USB storage devices, including USB flash drives and USB hard drives during
the POST. (Default: Enabled)
- 43 - BIOS Setup