Advantech EPC-C301 Series User Manual page 57

3.1.2.11 USB Configuration
Legacy USB Support

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

This is a workaround for OSes without XHCI hand-off support. The XHCI owner-
ship change should be claimed by XHCI driver.
USB Mass Storage Driver Support

Enable/Disable USB Mass Storage Driver Support.
USB transfer time-out

Time-out value for control, bulk, and interrupt transfers.
Device reset time-out

USB mass storage device start unit command time-out.
Device power-up delay

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.
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