DP35DP datasheet(60/84 Pages) INTEL

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Intel Desktop Board DP35DP Technical Product Specification

3.5

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.

7. Additional USB legacy feature options can be access by using Intel Integrator

Toolkit.

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.

3.6

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.

•

Intel® Flash Memory Update Utility, which requires booting from DOS. 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.

Both 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://support.intel.com/support/motherboards/desktop/sb/CS-

022312.htm.

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