RAR archive of 248 KB named M5A97_LE, which matches the ASUS M5A97 LE motherboard model naming. The name does not reveal what the archive holds, so it could be a boardview, schematic or firmware; inspect the contents after extraction. For a boardview, an application like OpenBoardView opens it to locate parts and trace nets; for a BIOS image, an SPI programmer writes it to the flash chip. Always compare the board revision on the PCB with any revision noted inside the archive 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 @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.