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Chapter 4: BIOS Settings
You can use this screen to select options for the USB Configuration. Use the up and down <Arrow> keys to
select an item. Use the <Plus> and <Minus> keys to change the value of the selected option. The settings
are described on the following pages.
Feature
Legacy USB Support
EHCI Hand-off
USB Mass Storage
Driver Support
USB transfer time-out
Device reset time-out
Options
Enables Legacy USB support.
Enabled
Auto option disables legacy support if no USB
Disabled
devices are connected;
Auto
Disabled
available only for EFI applications.
This is a workaround for OSes without EHCI
Enabled
hand-off support. The EHCI ownership change
Disabled
should be claimed by EHCI driver.
Enabled
Enables or disables USB Mass Storage Driver
Disabled
Support.
1 sec
5 sec
The time-out value for Control, Bulk, and
10 sec
Interrupt transfers
20 sec
1 sec
5 sec
USB mass storage device Start Unit command
10 sec
time-out
20 sec
47
Description
option
will
keep
USB
devices
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