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3.6.2.14 USB Configuration
The USB Configuration menu helps read USB information and configures USB settings.
Item
Legacy USB Support
XHCI Hand-off
USB Mass Storage Driver Support
Port 60/64 Emulation
USB transfer time-out
Device reset time-out
Device power-up delay
Options
Enabled[Default]
Disabled
Auto
Enabled[Default]
Disabled
Enabled[Default]
Disabled
Disabled[Default]
Enabled
1 sec
5 sec
10 sec
20 sec[Default]
10 sec
20 sec[Default]
30 sec
40 sec
Auto[Default]
Manual
EMS-SKLU/EMS-SKLU-Marine Quick Reference Guide 67
Quick Reference Guide
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 OSew without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
Enable/Disable USB Mass Storage Driver
Support.
Enables I/O port 60h/64h emulation support.
This should be enabled for the complete USB
keyboard legacy support for non-USB aware
OSes.
The time-out value for Control, Bulk, and
Interrupt transfers.
USB mass storage device Start Unit command
time-out.
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
100ms, for a Hub port the delay is taken form
Hub descriptor.
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