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USB Configuration
Version 2.14.1219. Copyright (C) 2011 American Megatrends, Inc.
Aptio Setup Utility - Copyright (C) 2011 American Megatrends, Inc.
USB Configuration
All USB Devices
[Enabled]
EHCI Controller 1
[Enabled]
EHCI Controller 2
[Enabled]
Legacy USB Configuration
Legacy USB Support
[Enabled]
Legacy USB Support
[Enabled]
Legacy USB 3.0 Support
[Enabled]
XHCI Hand-off
[Enabled]
EHCI Hand-off
[Enabled]
Legacy USB hardware delays and time-outs:
USB Transfer time-out
[20 sec]
Device reset time-out
[20 sec]
Device power-up delay
[Auto]
→ ←: Select Screen
↑ ↓: Select Item
Enter: Select
+/-: Change Opt.
F1: General Help
F2: Previous Values
F3: Optimized Defaults
F4: Save & Exit
ESC: Exit
Enabled/Disabled All USB
Devices
Advanced
► All USB Devices
This item is used to enable or disable all USB devices.
► EHCI Controller 1/2
This item is used to enable or disable USB 2.0(EHCI) support.
► Legacy USB Support
This item is used to enable the support for USB devices on legacy OS. If you have a USB
keyboard or mouse, set to enabled.
[Enabled]: This option will enable the legacy USB support.
[Disabled]: This option will keep USB devices available only for EFI applications.
[Auto]: This option will disable the legacy support if no USB devices are connected.
► Legacy USB 3.0 Support
This item is used to enable or disable legacy USB 3.0(XHCI) controller support.
► XHCI Hand-off
This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
► EHCI Hand-off
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
This item is used to select a time-out value for Control,Bulk and Interrupt Transfers. Default
value is [20 sec].
► Device reset time-out
This item is used to select the USB mass storage device start unit command time-out. Default
value is [20 sec].
► Device power-up delay
This item is used to set the maximum time the device will take before it can report itself to the
host controller.