ASRock Z490M Pro4 User Manual - Page 79

USB Configuration, Legacy USB Support, XHCI Hand-off

Page 79 highlights

4.6.7 USB Configuration Z490M 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. XHCI Hand-off This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change should be claimed by XHCI driver. 73 English

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73
English
Z490M Pro4
4.6.7
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.
XHCI Hand-off
°is is a workaround for OSes without XHCI hand-off support. °e XHCI
ownership change should be claimed by XHCI driver.