ASUS P8H77-I Manual Do Utilizador

Chapter 2: BIOS information

2-20

The USB Devices item shows the auto-detected values. If no USB device is detected, the 

item shows None.

[Enabled] 

Enables the support for USB devices on legacy operating systems (OS).

[Disabled] 

The USB devices can be used only for the BIOS setup program.

[Auto] 

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.

This item appears only when you set the previous item to [Enabled] or [Auto]. 
[Enabled] 

Enables the support for USB 3.0 devices on legacy operating systems 

(OS).

[Disabled] 

Disables the function.

Allows you to select an operation mode for the Intel xHCI controller. Configuration options: 

[Smart Auto] [Auto] [Enabled] [Disabled]

[Enabled] 

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

feature.

[Disabled] 

Disables the function.

[Enabled] 

Enables the High Definition Audio Controller.

[Disabled] 

Disables the controller.

The following two items appear only when you set the HD Audio Controller item to 

[Enabled].

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] 

Sets the front panel audio connector (AAFP) mode to high definition audio.

[AC97] 

Sets the front panel audio connector (AAFP) mode to legacy AC’97

[Enabled] 

Enables the Realtek LAN controller.

[Disabled] 

Disables the controller.

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