USB Functions [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. |
2.5.5PCIPnP
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. |
2.5.6Intel VT-d Configuration [Disabled]
[Disabled] | Disables the Intel Virtualization Technology for Directed I/O. |
[Enabled] | Enables the Intel Virtualization Technology for Directed I/O. |
Chapter 2: BIOS information |