MSI MS-7177 archive, compressed with RAR, 3.01 MB in size. Only the board number is stated, so it is unclear whether you will find a schematic, boardview, BIOS dump or a mix. MS-7xxx numbers belong to the MSI desktop motherboard range and are printed on the PCB. Once extracted, a schematic can guide checks of power rails, shorts and signal paths, while a BIOS image needs a programmer or flashing tool; in either case confirm the board revision matches and keep the original chip backup.
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.