ASRock Z270 Extreme4 User Manual - Page 83

USB Configuration, Legacy USB Support, PS/2 Simulator, XHCI Hand-off, ASM2142 Controller

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4.6.7 USB Configuration Z270 Extreme4 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. XHCI Hand-off This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change should be claimed by XHCI driver. ASM2142 Controller Enable/disable the ASM2142 controllers. 77 English

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English
77
Z270 Extreme4
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.
PS/2 Simulator
Enable PS/2 Simulator. °is should be enabled for the complete USB keyboard
legacy support for non-USB aware OSes.
*Enable this option if you install Windows 7.
XHCI Hand-off
°is is a workaround for OSes without XHCI hand-off support. °e XHCI
ownership change should be claimed by XHCI driver.
ASM2142 Controller
Enable/disable the ASM2142 controllers.