User Manual
Chapter 4
AMI UEFI BIOS Setup
58
XHCI Hand
‐
off
This is a workaround for
OSs without XHCI hand
‐
off support.
Disable
Disables this function
Enable
Enables this function
EHCI Hand
‐
off
This is a workaround for
OSs without ECHI hand
‐
off support.
Disable
Disables this function
Enable
Enables this function
USB mass
storage
driver
support
User can Enable or
disable USB mass storage
driver support.
Disable
Disables this function
Enable
Enables this function
USB
Transfer
time
‐
out
The time
‐
out value for
control, bulk, and interrupt
transfers.
1 Sec
5 Sec
10 Sec
20 Sec
Depends on the time
‐
out value
Device
Reset time
‐
out
USB mass storage device
start unit command time
‐
out.
10 Sec
20 Sec
30 Sec
40 Sec
Depends on the time
‐
out value
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
taken from Hub
descriptor