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User Manual
3.2.2.9 USB Configuration
BIOS Setting
Description
Legacy USB
User can enable or
Support
disable USB port.
XHCI Hand‐off
This is a workaround
for OSs without XHCI
hand‐ off support.
EHCI Hand‐off
This is a workaround
for OSs without ECHI
hand‐ off support.
USB Mass
User can Enable or
Storage Driver
disable USB mass
Support
storage driver
support.
USB Transfer
The time‐out value for
time‐ out
control, bulk, and
OMIW Motherboard
Chapter 3
Setting Option
Effect
Disabled
Will keep USB devices
available only for EFI
applications.
Enabled
Enable all the USB
devices
Disabled
Disables this function
Enabled
Enables this function
Disabled
Disables this function
Enabled
Enables this function
Disabled
Disables this function
Enabled
Enables this function
1 Sec
Depends on the time‐out
5 Sec
value
AMI BIOS Setup
42