RAR package of 732 KB labelled MSI MS-7097. The name identifies only the manufacturer and board, without revision or document type, so the archive should be extracted and inspected before use. MSI numbers its desktop motherboards in the MS-7xxx series, and that code appears on the PCB itself. If the contents turn out to be a firmware dump, confirm the image size equals the flash chip capacity and save the original chip with a programmer; if a schematic, check the revision against the board.
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 @IT_SERVICE_WORLD. 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.