ASRock Z370M Pro4 User Manual - Page 72

USB Configuration, Legacy USB Support, PS/2 Simulator, XHCI Hand-off

Page 72 highlights

4.6.6 USB Configuration Z370M Pro4 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. XHCI Hand-off This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change should be claimed by XHCI driver. 67 English

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67
English
Z370M Pro4
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. °is should be enabled for the complete USB keyboard
legacy support for non-USB aware OSes.
XHCI Hand-off
°is is a workaround for OSes without XHCI hand-off support. °e XHCI
ownership change should be claimed by XHCI driver.