Lanner NCA-4010 Series User Manual page 73

Network Computing Platforms
displays USB module version
USB Module Version:
displays USB devices
USB Devices:
displays USB controller information
USB Controllers:
this function enables or disables legacy USB support. Auto option
Legacy USB Support:
disables legacy support if no USB devices are connected. Disable option will keep USB
devices available only for EFI applications.
enables or disables EHCI Hand-off function. This is a workaround for
EHCI Hand-off:
operating systems without EHCI hand-off support. The EHCI ownership change should be
claimed by EHCI driver.