C&T Solution VIO-200-PC100-EHL Series, User Manual

Page: 90 / 108

VIO-PC100-EHL
l User’s Manual
5.3.11 USB Configuration
90
Chapter 5: BIOS Setup
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 Enabled [Default]
Disabled
This is a workaround for OSew without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
USB Mass Storage
Driver Support
Disabled
Enabled [Default]
Enable/Disable USB Mass Storage Driver
Support.
USB transfer time-out 1 sec ,
5 sec ,
10 sec ,
20 sec [Default]
The time-out value for Control, Bulk, and
Interrupt transfers.
Device reset time-out 10 sec ,
20 sec [Default] ,
30 sec,
40 sec
USB mass storage device Start Unit command
time-out.
Device power-up delay Auto [Default]
Manual
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.