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•
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, require an additional interface for
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 desktop boards D850EMD2/D850EMV2's compliance level with SMBIOS
3.5 Legacy USB Support
Legacy USB support enables USB devices such as keyboards and mice 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 nonlegacy 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.
✏
NOTE
Legacy USB support is for keyboards and mice only. Other USB devices are not supported in
legacy mode.
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 1.44 MB
diskette, a CD-ROM, or from the file location on the Web.
Overview of BIOS Features
Refer to
Section 1.5, page 19
89
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