Archive of 417 KB in ZIP format named M2V-MX SE, an SE edition of an M2V-MX desktop board. The name does not say what kind of file is inside, so extract it and check before use. Edition suffixes such as SE can mean a different hardware layout, so confirm the exact marking on the motherboard. If a BIOS image is included, keep a backup of the original flash contents and make sure the image size equals the chip capacity before writing.
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