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3.4

Legacy USB Support

Legacy USB support enables USB devices to be used even when the operating system’s USB

drivers are not yet available. Legacy USB support is used to access the BIOS Setup program, and

to install an operating system that supports USB. By default, Legacy USB support is set to

Enabled.

Legacy USB support operates as follows:

1. When you apply power to the computer, legacy support is disabled.

2. POST begins.

3. Legacy USB support is enabled by the BIOS allowing you to use a USB keyboard to enter and

configure the BIOS Setup program and the maintenance menu.

4. POST completes.

5. The operating system loads. While the operating system is loading, USB keyboards and mice

are recognized and may be used to configure the operating system. (Keyboards and mice are

not recognized during this period if Legacy USB support was set to Disabled in the BIOS Setup

program.)

6. After the operating system loads the USB drivers, all legacy and non-legacy USB devices are

recognized by the operating system, and Legacy USB support from the BIOS is no longer

used.

To install an operating system that supports USB, verify that Legacy USB support in the BIOS

Setup program is set to Enabled and follow the operating system’s installation instructions.

3.5

BIOS Updates

The BIOS can be updated using either of the following utilities, which are available on the Intel

World Wide Web site:



Intel Express BIOS Update Utility, which enables automated updating while in the Windows

environment. Using this utility, the BIOS can be updated from a file on a hard disk, a USB

drive (a flash drive or a USB hard drive), or a CD-ROM, or from the file location on the Web.



BIOS can be updated from a file on a USB drive (a flash drive or a USB hard drive), or a USB

CD-ROM drive.



Intel F7 switch during POST allows a user to select where the BIOS .bio file is located and

perform the update from that location/device.

All utilities verify that the updated BIOS matches the target system to prevent accidentally

installing an incompatible BIOS.

NOTE

Review the instructions distributed with the upgrade utility before attempting a BIOS update.

For information about

Refer to

BIOS update utilities

http://www.intel.com/support/motherboards/desktop/sb/CS-035442.htm