Asus P7P55D-E LX - Manual (Page 61)

ASUS P7P55D-E LX 2-19
Onboard USB 3.0 Controller [Enabled]
[Enabled] Enables the onboard USB 3.0 controller.
[Disabled] Disables the onboard USB 3.0 controller.
2.5.4 USB Configuration
The items in this menu allows you to change the USB-related features. Select an item then
press to display the configuration options.
The USB Devices Enabled item shows the auto-detected values. If no USB device is
detected, the item shows None.
USB Support [Enabled]
[Enabled] Enables the USB Host Controllers.
[Disabled] Disables the controllers.
The following items appear only when you set USB Support to [Enabled].
Legacy USB Support [Auto]
[Disabled] Disables the function.
[Enabled] Enables the support for USB devices on legacy operating systems (OS).
[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.
BIOS EHCI Hand-off [Enabled]
[Disabled] Disables the function.
[Enabled] Enables the support for operating systems without an EHCI hand-off
feature.
2.5.5 PCIPnP
The PCIPnP menu items allow you to change the advanced settings for PCI/PnP devices.
Plug And Play O/S [No]
[Yes] When set to [Yes] and if you install a Plug and Play operating system, the
operating system configures the Plug and Play devices not required for
boot.
[No] When set to [No], BIOS configures all the devices in the system.
2.5.6 Intel VT-d Configuration [Disabled]
[Disabled] Disables the Intel Virtualization Technology for Directed I/O.
[Enabled] Enables the Intel Virtualization Technology for Directed I/O.