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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.
Legacy USB Support [Enabled]
[Enabled]
[Disabled]
[Auto]
Legacy USB3.0 Support [Enabled]
This item appears only when you set the previous item to [Enabled] or [Auto].
[Enabled]
[Disabled]
Intel xHCI Mode [Smart Auto]
Allows you to select an operation mode for the Intel xHCI controller. Configuration options:
[Smart Auto] [Auto] [Enabled] [Disabled]
EHCI Hand-off [Disabled]
[Enabled]
[Disabled]
2.5.6
Onboard Devices Configuration
HD Audio Controller [Enabled]
[Enabled]
[Disabled]
The following two items appear only when you set the HD Audio Controller item to
[Enabled].
Front Panel Type [HD]
Allows you to set the front panel audio connector (AAFP) mode to legacy AC'97 or high-
definition audio depending on the audio standard that the front panel audio module supports.
[HD]
[AC97]
Realtek LAN Controller [Enabled]
[Enabled]
[Disabled]
2-20
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.
Enables the High Definition Audio Controller.
Disables the controller.
Sets the front panel audio connector (AAFP) mode to high definition audio.
Sets the front panel audio connector (AAFP) mode to legacy AC'97
Enables the Realtek LAN controller.
Disables the controller.
Chapter 2: BIOS information
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