A 424 KB ZIP archive for the Afox AG31-M2 motherboard. The name does not state the contents, which may be a BIOS image, schematic or similar service material for this board. Open it with a standard archive tool and review the files. When restoring firmware, read and back up the original flash chip with an external programmer before writing, and make sure the dump size equals the chip capacity. Match the model and any revision printed on the PCB against the file before relying on it.
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.