BIOS Setup
IB981
User’s Manual
59
4
4.3.9
USB Configuration
BIOS Setting
Description
Legacy USB
Support
Enables Legacy USB support.
“Auto” disables legacy support if there is no
USB device connected.
“Disable” 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.
EHCI Hand-off
Enabled / Disabled. This is a workaround for
OSes without EHCI hand-off support. The
EHCI ownership change should be claimed
by EHCI driver.
USB Mass Storage
Driver Support
Enables / Disables the support for USB
mass storage driver.
USB Transfer
time-out
The time-out value for Control, Bulk, and
Interrupt transfers.
