Usb Legacy Features - Avalue Technology EMX-NM70 User Manual

EMX-NM70 User's Manual

3.6.2.3 USB Legacy Features

Item
Legacy USB Support
XHCI Hand-off
EHCI Hand-off
Port 60/64 Emulation
32 EMX-NM70 User's Manual
Options
Enabled[Default]
Disabled
Auto
Disabled
Enabled[Default]
Disabled[Default]
Enabled
Disabled
Enabled[Default]
Description
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.
This is a workaround for OSes without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
This is a workaround for OSes without EHCI
hand-off support. The EHCI ownership change
should be claimed by EHCI driver.
Enables I/O port 60h/64h emulation support.
This should be enabled for the complete USB
keyboard legacy support for non-USB aware
OSes.