ASRock H370M-HDV/M.2 Software/BIOS Setup Guide - Page 43

USB Configuration, Legacy USB Support, XHCI Hand-off, USB Single Port Control, USB Port 1

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3.4.6 USB Configuration H370M-HDV/M.2 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. USB Single Port Control USB Port 1 Enable or disable this USB Physical Connector (physical port). Once disabled, any USB devices plugged into the connector will not be detected by BIOS or OS. USB Port 2 Enable or disable this USB Physical Connector (physical port). Once disabled, any USB devices plugged into the connector will not be detected by BIOS or OS. USB Port 3 Enable or disable this USB Physical Connector (physical port). Once disabled, any USB devices plugged into the connector will not be detected by BIOS or OS. 39

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39
H370M-HDV/M.2
3.4.6
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.
XHCI Hand-off
°is is a workaround for OSes without XHCI hand-off support. °e XHCI
ownership change should be claimed by XHCI driver.
USB Single Port Control
USB Port 1
Enable or disable this USB Physical Connector (physical port). Once disabled, any
USB devices plugged into the connector will not be detected by BIOS or OS.
USB Port 2
Enable or disable this USB Physical Connector (physical port). Once disabled, any
USB devices plugged into the connector will not be detected by BIOS or OS.
USB Port 3
Enable or disable this USB Physical Connector (physical port). Once disabled, any
USB devices plugged into the connector will not be detected by BIOS or OS.