Supermicro 2028UT-BC1NRT, User Manual, Page: 111 / 138

Chapter 7: AMI BIOS
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
South Bridge
This feature is used to configure Intel South Bridge settings.

USB Configuration
The following USB items will display.
•
USB Module Version
•
USB Devices
Legacy USB Support (Available when USB Functions is not Disabled)
Select Enabled to support legacy USB devices. Select Auto to disable legacy
support if USB devices are not present. Select Disabled to have USB devices
available for EFI (Extensive Firmware Interface) applications only. The settings are
Disabled,
Enabled and Auto.
U SB 3.0 Support
Select Enabled for USB 3.0 support. The options are Disabled and Enabled .
XHCI Hand-Off
This feature is a work-around solution for operating systems that do not support
XHCI (Extensible Host Controller Interface) hand-off. The XHCI ownership change
should be claimed by the XHCI driver. The settings are
Enabled
and Disabled.
EHCI Hand-Off
This item is for operating systems that do not support Enhanced Host Controller
Interface (EHCI) hand-off. When this item is enabled, EHCI ownership change will
be claimed by the EHCI driver. The settings are Enabled and
Disabled .
USB Mass Storage Driver Support
Select Enabled to use USB mass storage devices. The options are Disabled and
Enabled .
Port 60/64 Emulation
Select Enabled for I/O port 60h/64h emulation support which will provide complete
USB keyboard legacy support for the operating system that does not support Legacy
USB devices. The options are Disabled and
Enabled .