User Manual
Page 87
Select UEFI Setup Only to disable legacy USB support. Legacy USB Support Enable or disable Legacy OS Support for USB 3.0 devices. 82 English USB 3.0 Controller Enable or disable all the USB 2.0 ports. Legacy USB 3.0 Support Enable or disable Legacy OS Support for USB 2.0 devices. If you encounter USB compatibility issues it is recommended to support USB devices under the UEFI setup and Windows/Linux operating systems only. 4.4.8 USB Configuration USB Controller Enable or disable all the USB 3.0 ports.
Select UEFI Setup Only to disable legacy USB support. Legacy USB Support Enable or disable Legacy OS Support for USB 3.0 devices. 82 English USB 3.0 Controller Enable or disable all the USB 2.0 ports. Legacy USB 3.0 Support Enable or disable Legacy OS Support for USB 2.0 devices. If you encounter USB compatibility issues it is recommended to support USB devices under the UEFI setup and Windows/Linux operating systems only. 4.4.8 USB Configuration USB Controller Enable or disable all the USB 3.0 ports.