Usb Configuration - Asus P8H77-M PRO User Manual

NB PCIe Configuration
Allows you to configure the NB PCI Express settings.
PCIE X16_1 Link Speed [Auto]
Allows you to configure the PCIE X16_1 link speed. Configuration options: [Auto]
[Gen1] [Gen2]
3.5.5

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
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] and allows you
to enable or disable the legacy USB3.0 support. Configuration options: [Enabled] [Disabled]
[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]
3-20
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.
Enables the support for operating systems without an EHCI hand-off
feature.
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
Smart Auto
Disabled
Chapter 3: BIOS setup
Exit
Tool