3.6.5USB Configuration

The items in this menu allow you to change the USB-related features.

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The Mass Storage Devices item shows the auto-detected values. If no USB device is detected, the item shows None.

Intel xHCI Mode [Smart Auto]

[Auto]

The xHCI is automatically enabled and runs at USB 3.0 mode when the

 

xHCI driver is installed in the operating system.

[Smart Auto]

Upon detection, the xHCI driver supports the USB 3.0 mode during both

 

POST and operating system.

[Enabled]

Enables the xHCI controller.

[Disabled]

Disables the xHCI controller.

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.

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Chapter 3: BIOS setup