Avalue Technology EMX-NM70, User Manual

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