User's Manual

Optional Devices
Chapter Four - 37
BIOS Setup
USB Configuration Sub-Menu
Aptio Setup Utility
Advanced
USB Configuration
USB Devices:
1 point
Legacy USB Support [Enabled]
USB3.0 Support [Enabled]
XHCI Hand-off [Enabled]
EHCI Hand-off [Enabled]
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
→←: Select Screen
↑↓: Select Item
Enter: Select
–/+: Change Opt.
F1: General Help
F2: Previous Values
F3: Optimized Defaults
F4: Save & Exit
ESC: Exit
USB Configuration Sub-Menu Selections
You can make the following selections on the USB configuration sub-menu.
Feature
Options
Description
Legacy USB
enabled
Disabled
Enabled
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.
Usn3.0
Support
Disabled
Enabled
Enable/Disable USB3.0 (XHCI)
Controller support.
XHCI Hand-off
Disabled
Enabled
This is a workaround for OSes
without XHCI hand-off support.
This XHCI ownership change
should be claimed by XHCI
driver.
EHCI Hand-off
Disabled
Enabled
This is a workaround for OSes
without EHCI hand-off support.
This EHCI ownership change
should be claimed by EHCI
driver.