Small RAR archive labelled only with the ASUS X407MA laptop model, with no indication of whether it contains a boardview, schematic or firmware. At 141 KB the size fits a compressed boardview or a small document better than a full BIOS image, but only opening it will tell. Unpack it and identify the contents by extension before use. Whatever it holds, check that the mainboard number and revision printed on your X407MA PCB match the file, since ASUS often ships several board revisions under one model name.
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 @boardviewsandachematics. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.