BIOS archive for the P5GC-MX/GBL motherboard, revision 3.06G, a 606 KB ZIP. The name does not state the maker, so match the model and revision printed on the board before use. A file this size most likely holds an image for a 512 KB chip, or a firmware update package. Check the real image size against the flash chip, and back up the original contents before writing with a programmer or a flashing tool.
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 →