Advantech ARK-2151S User Manual page 45

5.2.2.11 USB Configuration

Legacy USB Support
Enable support for legacy USB. Auto option disables legacy support if no USB
devices are connected.

USB3.0 Support
This item allows users to enable or disable USB 3.0 support.

XHCI Hand-Off
This is a workaround for the OS without XHCI hand-off support. The XHCI own-
ership change should claim by XHCI driver.

EHCI Hand-Off
This is a workaround for the OS without EHCI hand-off support. The EHCI own-
ership change should claim by EHCI driver.

USB transfer time-out
Set the time-out value for Control, Bulk, and Interrupt transfers.

Device reset time-out
Set USB mass storage device Start Unit command time-out value.

Device power-up delay
Set the maximum time of 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.
Figure 5.14 USB Configuration
39 ARK-2151S User Manual