Advantech MIC-770 - Figure 3.32 USB Configuration

49 MIC-770 User Manual
Chapter 3 BIOS Operation
3.2.2.15 USB Configuration
Figure 3.32 USB Configuration
 Legacy USB Support
This is for supporting USB device under legacy OS such as DOS. When choos-
ing 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 and
disable USB legacy mode when no USB device is plugged.
 XHCI Hand-off
This is a workaround for OS without XHCI hand-off support. The XHCI owner-
ship change should be claimed by 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. [1,5,10,20sec]
 Device reset time-out
Allows you to select the USB device reset time-out value. [10,20,30,40sec]
 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 take from Hub descriptor.