Advantech ASR-3100PP-R11A1E User Manual page 49

3.2.2.7 USB Configuration
Legacy USB Support

This supports USB devices under a legacy OS such as DOS. When choosing
"AUTO", the system will automatically detect if any USB device is plugged into
the computer and enable USB legacy mode or disable USB legacy mode when
no USB device is attached.
 XHCI Hand-off
This is a workaround for OS without XHCI hand-off support.
The XHCI ownership change should be claimed by XHCI driver.
 EHCI Hand-off
This is a workaround for OS without EHCI hand-off support.
The EHCI ownership change should be claimed by EHCI driver.
 USB Mass Storage Driver Support
Enable/Disable USB mass storage driver support.
 USB Transfer Time-out
Selects the USB transfer time-out value. [1,5,10,20sec]
 Device Reset Time-out
Selects the USB device reset time-out value. [10,20,30,40 sec]
 Device Power-up Delay
This item appears only when Device power-up delay item is set to [manual].
39 ASR-3100 Series User Manual