Advantech ARK-3520P series User Manual page 54

3.2.2.14 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.

Port 60/64 Emulation
Enables I/O port 60h/64h emulation support. This should be enabled for the
complete USB keyboard legacy support for non-USB aware OSes.

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.
ARK-3520P User Manual 44