Hi-Fi A85S3 / Hi-Fi A75S3 / Hi-Fi A55S3 UEFI BIOS Manual
10
USB Configuration
Legacy USB Support
The item allows you to enable Legacy USB support. AUTO option disables
legacy support if no USB devices are connected. DISABLE option will keep
USB devices available only for EFI applications.
Options: Enabled (Default) / Disabled / Auto
Legacy USB3.0 Support
The item allows you to enable or disable Legacy USB3.0 (XHCI) Controller
support. (This item is for A85 & A75 chipset.)
Options: Enabled (Default) / Disabled
XHCI Hand-Off
This is a workaround for OSes without XHCI hand-off support. The XHCI
ownership change should be claimed by XHCI driver. (This item is for A85 &
A75 chipset.)
Options: Enabled (Default) / Disabled
EHCI Hand-Off
This is a workaround for OSes without EHCI hand-off support. The EHCI
ownership change should be claimed by EHCI driver.
Options: Disabled (Default) / Enabled
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