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2.5.5
USB Configuration
The items in this menu allow you to change the USB-related features.
The USB Devices item shows the auto-detected values. If no USB device is detected, the
item shows None.
Intel USB2.0 EHCI Controller
[Enabled]
[Disabled]
Legacy USB Support [Enabled]
[Enabled]
[Disabled]
[Auto]
Legacy USB3.0 Support [Enabled]
[Enabled]
[Disabled]
Intel xHCI Mode [Smart Auto]
Allows you to select the Intel xHCI Mode.
Configuration options: [Smart Auto] [Auto] [Enabled] [Disabled]
EHCI Hand-off [Disabled]
[Enabled]
[Disabled]
USB Single Port Control
Allows you to enable or disable individual USB ports.
2-26
Enables the USB2.0 EHCI Controller.
Disables the USB2.0 EHCI Controller.
Enables the support for USB devices on legacy operating systems (OS).
The USB devices can be used only for the BIOS setup program.
Allows the system to detect the presence of USB devices at startup. If
detected, the USB controller legacy mode is enabled. If no USB device is
detected, the legacy USB support is disabled.
Enables the support for USB 3.0 devices on legacy operating systems
(OS).
Disables the function.
Enables the support for operating systems without an EHCI hand-off
feature.
Disables the function.
Chapter 2: BIOS information
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