Usb Configuration - Asus P8Z77-V PREMIUM Manual

3.5.6

USB Configuration

The items in this menu allow you to change the USB-related features.
UEFI BIOS Utility - Advanced Mode
Main
Back Advanced\
USB Configuration
USB Devices:
1 Keyboard, 1 Mouse, 2 Hubs
Legacy USB Support
Legacy USB3.0 Support
Intel xHCI Mode
EHCI Hand-off
Mass Storage Devices
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]
[Enabled]
[Disabled]
Intel xHCI Mode [Smart Auto]
[Auto]
[Smart Auto]
[Enabled]
[Disabled]
EHCI Hand-off [Disabled]
[Enabled]
feature.
[Disabled]
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]
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Ai Tweaker Advanced
USB Configuration >
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.
Keeps the last operation of xHCI controller in OS during bootup.
Enables the operation of xHCI controller.
Enables the function.
Disables the function.
Enables the support for operating systems without an EHCI hand-off
Disables the function.
Monitor Boot
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.
Enabled
Enabled
Enabled
Disabled
Auto
Chapter 3: BIOS setup
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