xHCI Legacy USB Support [Enabled]

[Enabled]

Your system supports the USB 3.0 devices in legacy operating systems.

[Disabled]

Your USB 3.0 devices can be used for BIOS setup only and cannot be

 

recognized in the boot devices list.

[Auto]

Your system automatically detects the presence of USB3.0 devices at

 

startup. If any USB 3.0 devices are detected, the xHCI legacy USB support

 

is enabled.

EHCI Legacy USB Support [Enabled]

[Enabled]

Your system supports the USB 2.0 devices in legacy operating systems.

[Disabled]

Your USB 2.0 devices can be used for BIOS setup only and cannot be

 

recognized in the boot devices list.

[Auto]

Your system automatically detects the presence of USB 2.0 devices at

 

startup. If any USB 2.0 devices are detected, the xHCI legacy USB support

 

is enabled.

xHCI Hand-off [Disabled]

[Enabled]

Enables the support for operating systems without an xHCI hand‑off

 

feature.

[Disabled]

Disables the xHCI Hand-off support.

EHCI Hand-off [Disabled]

[Enabled]

Enables the support for operating systems without an EHCI hand‑off

 

feature.

[Disabled]

Disables the EHCI Hand-off support.

USB Single Port Control

This item allows you to enable or disable the individual USB ports.

Refer to section 1.2.2 Motherboard layout for the location of the USB ports.

3 Chapter

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Chapter 3: BIOS setup