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