Chapter 4: AMI BIOS
4-19
XHCI Hand-Off
This is a work-around solution for operating systems that do not support XHCI (Ex-
tensible Host Controller Interface) hand-off. The XHCI ownership change should be
claimed by the XHCI driver. The settings are Enabled and Disabled.
EHCI Hand-Off
This item is for operating systems that do not support Enhanced Host Controller
Interface (EHCI) hand-off. When this item is enabled, EHCI ownership change will
be claimed by the EHCI driver. The settings are Enabled and Disabled.
Port 60/64 Emulation
Select Enabled for I/O port 60h/64h emulation support, which in turn, will provide
complete legacy USB keyboard support for the operating systems that do not sup-
port legacy USB devices. The options are Disabled and Enabled.
USB 3.0 Support
Select Enabled for USB 3.0 support. The options are Smart Auto, Auto, Enabled,
Disabled and Manual.
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