Intel BONANZA S478 I875 ATX DDR BLKD875PBZLK Manual Do Utilizador

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Legacy USB 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.  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. 

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, or a CD-ROM, or from the file location on the Web. 

•  Intel

®

 Flash Memory Update Utility, which requires creation of a boot diskette and manual 

rebooting of the system.  Using this utility, the BIOS can be updated from a file on a 1.44 MB 
diskette (from a legacy diskette drive or an LS-120 diskette drive) or a CD-ROM. 

Both utilities support the following BIOS maintenance functions: 
•  Verifying that the updated BIOS matches the target system to prevent accidentally installing 

an incompatible BIOS. 

•  Updating both the BIOS boot block and the main BIOS.  This process is fault tolerant to 

prevent boot block corruption. 

•  Updating the BIOS boot block separately. 
•  Changing the language section of the BIOS. 
•  Updating replaceable BIOS modules, such as the video BIOS module. 
•  Inserting a custom splash screen.