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BIOS SETUP
30
MI958 User’s Manual
USB Configuration
Aptio Setup Utility – Copyright © 2010 American Megatrends, Inc.
Main
Advanced
Chipset
Boot
Security
Save & Exit
USB Configuration
→
←
Select Screen
↑↓
Select Item
Enter: Select
+- Change Field
F1: General Help
F2: Previous Values
F3: Optimized Default
F4: Save ESC: Exit
USB Devices:
1 Keyboard, 1 Mouse
Legacy USB Support
Enabled
EHCI Hand-off
Disabled
USB hardware delays and time-outs:
USB transfer time-out
20 sec
Device reset time-out
20 sec
Device power-up delay
Auto
Legacy USB Support
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.
EHCI Hand-off
Enabled/Disabled. This is a workaround for Oses without EHCI
hand-off support. The EHCI ownership change should be claimed by
EHCI driver.
USB transfer time-out
The time-out value for Control, Bulk, and Interrupt transfers.
Device reset time-out
USB mass storage device Start Unit command time-out.
Device power-up delay
Maximum time the device will take before it properly reports itself to the
Host Controller.
‘
Auto
’
users default value: for a Root port it is 100ms,
for a Hub port the delay is taken from Hub descriptor.
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