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USB Configuration
Press [Enter] to make settings for the following sub-items:
USB Configuration
Legacy USB Support
The optional settings: [Enabled]; [Disabled]; [Auto].
[
Enabled
]: To enable legacy USB support.
[
Disabled]
: to keep USB devices available only for EFI specification,
[
Auto
]: To disable legacy support if no USB devices are connected.
XHCI Hand-off
This is a workaround for OSes without XHCI hand-off support. The XHCI
ownership change should be claimed by XHCI driver.
The optional settings: [Enabled]; [Disabled].
USB Mass Storage Driver Support
Use this item to enable or disable USB mass storage driver support.
The optional settings: [Disabled]; [Enabled].
PS2 KB/MS Enable
Use this item to enable or disable I/O port 60h/64h emulation support. This should
be enabled for the complete USB keyboard legacy support for non-USB aware
OSes.
The optional settings: [Enabled]; [Disabled].
USB hardware delays and time-outs:
USB transfer time-out
Use this item to set the time-out value for Control, Bulk, and Interrupt transfers.
The optional settings: [1 sec]; [5 sec]; [10 sec]; [20 sec].
Device reset time-out
Use this item to set USB mass storage device Start Unit command time-out.
The optional settings: [10 sec]; [20 sec]; [30 sec]; [40 sec].
Device power-up delay
Use this item to set maximum time the device will take before it properly reports
itself to the host controller. ‘Auto’ uses default value: for a root port it is 100 ms, for
