RAR archive labelled for the ASUS P8H67-V desktop motherboard, an H67-chipset board for Intel LGA1155 processors. The name does not say what is inside, so it may hold a BIOS image, a schematic or a boardview; at 245 KB it is too small for a full BIOS image of this board, so documentation or a partial file is more likely. Extract it first and check the contents with a hex editor, PDF reader or boardview viewer. Compare the board name and revision printed on the PCB with the files before using them for diagnosis or reflashing.
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.