Usb Configuration - ASROCK H110M-DVS R2.0 User Manual

4.6.6 USB Configuration

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.
PS/2 Simulator
Enable PS/2 Simulator. This should be enabled for the complete USB keyboard
legacy support for non-USB aware OSes.
*Enable this option if you install Windows 7.
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