USB 2.0 Controller [Enabled]

Allows you to enable or disable the USB 2.0 controller.

Configuration options: [Enabled] [Disabled]

USB 2.0 Controller Mode [HiSpeed]

Allows you to set the USB 2.0 controller mode to HiSpeed (480 Mbps) or FullSpeed (12 Mbps). Configuration options: [FullSpeed] [HiSpeed]

The USB 2.0 Controller Mode item appears only when you enable the USB 2.0 Controller.

BIOS EHCI Hand-off [Enabled]

Allows you to enable the support for operating systems without an EHCI hand‑off feature. Configuration options: [Disabled] [Enabled]

Legacy USB Support [Auto]

Allows you to enable or disable the support for legacy USB devices. Setting to [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.

Configuration options: [Disabled] [Enabled] [Auto]

2.5.5PCIPnP

The PCIPnP menu items allow you to change the advanced settings for PCI/PnP devices.

BIOS SETUP UTILITY

Advanced

Advanced PCI/PnP Settings

WARNING: Setting wrong values in below sections may cause system to malfunction.

Plug And Play O/S

[No]

NO: lets the BIOS configure all the devices in the system. YES: lets the operating system configure Plug and Play (PnP) devices not required for boot if your system has a Plug and Play operating system.

Plug And Play O/S [No]

When set to [NO], BIOS configures all the devices in the system. 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.

Configuration options: [No] [Yes]

2-30

Chapter 2: BIOS setup