IIOT-I531 User Manual
56
Feature
Options
Description
Legacy USB Support
Enabled
Disabled
Auto
Enables Legacy USB support.
Auto
option disables legacy support if no USB devices are
connected;
Disabled
option will keep USB devices available only for EFI
applications.
XHCI Hand-off
Enabled
Disabled
This is a workaround for OSes without XHCI hand-off support. The
XHCI ownership change should be claimed by XHCI driver.
USB Mass Storage
Driver Support
Enabled
Disabled
Enables or disables USB Mass Storage Driver Support.
USB transfer time-
out
1 sec
5 sec
10 sec
20 sec
The time-out value for Control, Bulk, and Interrupt transfers
Device reset
time-out
1 sec
5 sec
10 sec
20 sec
USB mass storage device Start Unit command time-out
Device power-up
delay
Auto
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 100 ms, for a Hub port the delay is taken from Hub descriptor.
