RAR archive for the P8H61-M PLUS desktop motherboard, marked V2 in the name, 339 KB in size. The name does not list the contents, so it may hold a boardview, schematic or firmware for this H61-chipset board; unpack it and check the files before use. A package this small typically contains layout or document files rather than a full BIOS set. Whatever is inside, match the V2 marking against the revision printed on the PCB, because component positions and part numbers can change between board versions.
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 @boardview. 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.