8 usb configuration, Legacy usb support, Usb 3.0 support – ADLINK cPCI-6520 User Manual

Page 94: Xhci hand-off

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BIOS Setup

8.3.8

USB Configuration

You can use this screen to select options for the USB Configura-
tion. Use the up and down < Arrow > keys to select an item. The
screen is shown below.

Legacy USB Support

Enables 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. Set this value to
Enabled/Disabled/Auto.

USB 3.0 Support

To enable or disable USB 3.0 (XHCI) controller support. Set this
value to Enabled/Disabled.

XHCI Hand-off

This is a workaround for OSes without XHCI hand-off support. The
XHCI ownership change should be claimed by the XHCI driver.
Set this value to Enabled/Disabled.