User Manual
Chapter 3
AMI BIOS Setup
OMIW- OPS PC Module
37
3.2.2.9 USB Configuration
BIOS Setting
Description
Setting Option Effect
Legacy USB
Support
User can enable or
disable USB port.
Disabled
Will keep USB devices
available only for EFI
applications.
Enabled
Enable all the USB
devices
XHCI Hand‐off This is a workaround
for OSs without XHCI
hand‐ off support.
Disabled
Disables this function
Enabled
Enables this function
EHCI Hand‐off This is a workaround
for OSs without ECHI
hand‐ off support.
Disabled
Disables this function
Enabled
Enables this function
USB Mass
Storage Driver
Support
User can Enable or
disable USB mass
storage driver
support.
Disabled
Disables this function
Enabled
Enables this function
USB Transfer
time‐ out
The time‐out value for
control, bulk, and
1 Sec
5 Sec
Depends on the time‐out
value