System Management Bios (Smbios); Usb Legacy Support - Intel D850GB Technical Product Specification

3.4 System Management BIOS (SMBIOS)

SMBIOS is a Desktop Management Interface (DMI) compliant method for managing computers in
a managed network.
The main component of SMBIOS is the management information format (MIF) database, which
contains information about the computing system and its components. Using SMBIOS, a system
administrator can obtain the system types, capabilities, operational status, and installation dates for
system components. The MIF database defines the data and provides the method for accessing this
information. The BIOS enables applications such as third-party management software to use
SMBIOS. The BIOS stores and reports the following SMBIOS information:
•
BIOS data, such as the BIOS revision level
•
Fixed-system data, such as peripherals, serial numbers, and asset tags
•
Resource data, such as memory size, cache size, and processor speed
•
Dynamic data, such as event detection and error logging
Non-Plug and Play operating systems, such as Windows NT
obtaining the SMBIOS information. The BIOS supports an SMBIOS table interface for such
operating systems. Using this support, an SMBIOS service-level application running on a non-
Plug and Play operating system can obtain the SMBIOS information.
For information about
The D850GB board's compliance level with SMBIOS

3.5 USB Legacy Support

USB legacy support enables USB devices such as keyboards, mice, and hubs to be used even when
the operating system's USB drivers are not yet available. USB legacy support is used to access the
BIOS Setup program, and to install an operating system that supports USB. By default, USB
legacy support is set to Enabled.
USB legacy support operates as follows:
1. When you apply power to the computer, legacy support is disabled.
2. POST begins.
3. USB legacy 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 USB legacy 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 USB legacy support from the BIOS is no longer used.
To install an operating system that supports USB, verify that USB Legacy support in the BIOS
Setup program is set to Enabled and follow the operating system's installation instructions.
Overview of BIOS Features
†
, require an additional interface for
Refer to
Section 1.3, page 16
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