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USB Configuration
Feature
Legacy USB Support
XHCI Hand-off
USB Mass Storage
Driver Support
Port 60/64 Emulation
USB transfer time-out
Device reset time-out
Options
Enables Legacy USB support.
Enabled
Auto option disables legacy support if no
Disabled
USB devices are connected;
Auto
Disabled option will keep USB devices
available only for EFI applications.
This is a workaround for OSes without XHCI
Enabled
hand-off support. The XHCI ownership
Disabled
change should be claimed by XHCI driver.
Enabled
Enables or disables USB Mass Storage
Disabled
Driver Support.
Enables I/O port 60h/64h emulation
Enabled
support. This should be enabled for the
Disabled
complete USB keyboard legacy support for
non-USB aware OSes.
1 sec
5 sec
The time-out value for Control, Bulk, and
10 sec
Interrupt transfers
20 sec
1 sec
USB mass storage device Start Unit
5 sec
command time-out
Description
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