Usb Coniguration - ASROCK Z87 Extreme9/ac User Manual

4.4.9 USB Coniguration

USB Controller
Enable or disable all the USB ports.
Intel USB 3.0 Mode
Enable or disable all the USB 3.0 ports.
Legacy USB Support
Enable or disable Legacy OS Support for USB 2.0 devices. If you encounter USB
compatibility issues it is recommended to disable legacy USB support. Select UEFI
Setup Only 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 3.0 devices.
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