Archive of 519 KB in ZIP format labelled M2A-MX, a desktop motherboard style model name. The contents are not described, so extract and check the files before use; a package this size typically contains a BIOS image. Verify the model and revision silkscreened on the board before writing anything. With an SPI programmer, read and save the existing chip first, then confirm the dump size equals the flash capacity so a mismatched image is not written.
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 @laptopchiplevelrepair. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip