User Manual
Page 78
Select UEFI Setup Only to disable legacy USB support. If you encounter USB compatibility issues it is recommended to support USB devices under the UEFI setup and Windows/Linux operating systems only. Legacy USB 3.0 Support Enable or disable Legacy OS Support for USB 2.0 devices. USB 3.0 Controller Enable or disable all the USB ports. Legacy USB Support Enable or disable Legacy OS Support for USB 3.0 devices. 74 English 4.4.7 USB Configuration USB Controller Enable or disable all the USB 3.0 ports.
Select UEFI Setup Only to disable legacy USB support. If you encounter USB compatibility issues it is recommended to support USB devices under the UEFI setup and Windows/Linux operating systems only. Legacy USB 3.0 Support Enable or disable Legacy OS Support for USB 2.0 devices. USB 3.0 Controller Enable or disable all the USB ports. Legacy USB Support Enable or disable Legacy OS Support for USB 3.0 devices. 74 English 4.4.7 USB Configuration USB Controller Enable or disable all the USB 3.0 ports.