BIOS ROM for the Z68 Extreme4 desktop motherboard, version 2.20, in a 4.38 MB ZIP. The name gives no brand, so only the model and firmware version are known from it. A ROM like this can be flashed through the board's own update utility or programmed directly onto the SPI chip when the board fails to post after a bad flash. Check the exact model, since a Gen3 variant exists with separate firmware, keep a copy of the original chip, and confirm the file size matches the flash capacity.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →