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6 usb configuration, Usb configuration -28, Chapter 3 – Asus P8Z77-V PREMIUM User Manual

Page 114: Legacy usb support [enabled, Legacy usb3.0 support [enabled, Intel xhci mode [smart auto, Ehci hand-off [disabled, Mass storage devices [auto, Chapter 3: bios setup

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3-28

Chapter 3: BIOS setup

Chapter 3

3.5.6

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]

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.

Legacy USB3.0 Support [Enabled]

[Enabled]

Enables the support for USB 3.0 devices on legacy operating systems

(OS).

[Disabled]

Disables the function.

Intel xHCI Mode [Smart Auto]

[Auto]

Keeps the last operation of xHCI controller in OS during bootup.

[Smart Auto]

Enables the operation of xHCI controller.

[Enabled]

Enables the function.

[Disabled]

Disables the function.

EHCI Hand-off [Disabled]

[Enabled]

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

feature.
[Disabled]

Disables the function.

Mass Storage Devices [Auto]

Allows you to set the type of emulation for your USB storage devices.
Configuration options: [Auto] [Floppy] [Forced FDD] [Hard-disk] [CD-ROM]

Main

Ai Tweaker

Advanced

Monitor

Boot

Tool

Exit

Enables Legacy USB support. AUTO

option disables legacy support if no

USB devices are connected. DISABLE

option will keep USB devices

available only for EFI applications.

Back

Advanced\

USB Configuration >

UEFI BIOS Utility - Advanced Mode

USB Configuration

USB Devices:

1 Keyboard, 1 Mouse, 2 Hubs

Legacy USB Support

Enabled

Legacy USB3.0 Support

Enabled

Intel xHCI Mode

Enabled

EHCI Hand-off

Disabled

Mass Storage Devices

Auto