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USB Configuration
Aptio Setup Utility – Copyright © 2012 American Megatrends, Inc.
Advanced
Main
USB Configuration
USB Module Version
USB Controllers:
1 XHCI
USB Devices:
2 Keyboards, 1 Mouse, 2 Hubs
Legacy USB Support
XHCI Hand-off
USB Mass Storage Driver Support
Port 60/64 Emulation
USB hardware delays and time-outs:
USB Transfer time-out
Device reset tine-out
Device power-up delay
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.
XHCI Hand-off
This is a workaround for OSes without XHCI hand-off support. The
XHCI ownership change should be claimed by XHCI driver.
USB Mass Storage Driver Support
Enable/Disable USB Mass Storage Driver Support.
Port 60/64 Emulation
Enables I/O port 60h/64h emulation support. This should be enabled for
the complete USB keyboard legacy support for non-USB aware OSes.
USB Transfer time-out
The time-out value for Control, Bulk, and Interrupt transfers.
Device reset tine-out
USB mass Storage device start Unit command time-out.
Chipset
Boot
12
Enabled
Disabled
Enabled
Disabled
20 sec
20 sec
Auto
MB990 User's Manual
BIOS SETUP
Security
Save & Exit
→ ←
Select Screen
↑↓ Select Item
Enter: Select
+-
Change Opt.
F1: General Help
F2: Previous Values
F3: Optimized Defaults
F4: Save & Exit
ESC: Exit
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