BIOS Setup
ARD-037-N User Manual
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4.4.10 USB Configuration
BIOS Setting
Description
Legacy USB Support
•
Enabled
enables Legacy USB support.
•
Auto
disables legacy support if there is no
USB device connected.
•
Disabled
keeps USB devices available only
for EFI applications.
XHCI Hand-off
This is a workaround for OSes without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
USB Mass Storage Driver
Support
Enables / Disables the support for USB mass
storage driver.
USB Transfer time-out
The time-out value (1 / 5 10 / 20 secs) for
Control, Bulk, and Interrupt transfers.
Device reset time-out
Gives seconds (10 / 20 / 30 / 40 secs) to delay
execution of Start Unit command to USB mass
storage device.
Device power-up delay
The 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
100ms. But for a Hub port, the delay is taken
from Hub descriptor.
