Advantech LGA 1700 User Manual page 68

3.2.2.14 USB Configuration
Legacy USB Support

This is for supporting USB devices under 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 when a USB device is
plugged in and disable USB legacy mode when no USB device is plugged in.
XHCI Hand-off

This is a workaround for OS without XHCI hand-off support. The XHCI owner-
ship change should be claimed by the XHCI driver.
USB Mass Storage Driver Support

"Enable" or "Disable" USB Mass Storage driver support.
USB transfer time-out

Allows you to select the USB transfer time-out value. [1, 5, 10, 20 sec]
Device reset time-out

Allows you to select the USB device reset time-out value. [10, 20, 30, 40 sec]
Device power-up delay

Maximum time the device will take before it properly reports itself to the Host
Controller. "Auto" uses the default value: for a Root port it is 100 ms, for a Hub
port the delay is taken from the Hub descriptor.
Mass Storage Devices

Mass storage device emulation type. "Auto" enumerates devices according to
their media format. Optical drives are emulated as "CD-ROM" drives with no
media and will be emulated according to a drive type.
MIC-770 V3 User Manual
Figure 3.32 USB Configuration
54