Table of Contents
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USB Configuration
Feature
Legacy USB Support
EHCI Hand-off
USB Beep
Device transfer time-out
Device reset time-out
Device power-up delay
Device power-up delay in seconds
77
Options
Enabled
Disabled
AUTO
Enabled
Disabled
Enabled
Disabled
1 sec
5 sec
10 sec
20 sec
10sec
20sec
30sec
40sec
Auto
Manual
5
COMe-mTT10 / BIOS Operation
Description
Enables Legacy USB support. AUTO option disables
legacy support if no USB devices are connected.
DISABLE option will keep USB devices available only for
EFI applications.
This is a workaround for OSes without EHCI hand-off
Support. The EHCI ownership change should be claimed
by EHCI driver
Send speaker beep for device attach / detach
The time-out value for Control, Bulk and Interrupt
transfers
USB mass storage device Start Unit command time-out
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, for a Hub port the
delay is taken from Hub descriptor
Delay range is 1..40 seconds, in one second increments
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