MSI board MS-7164 material packed into a 1.58 MB RAR archive. The name provides no description of the contents, so open it with 7-Zip or WinRAR to see whether it holds a BIOS file, a schematic or something else. MSI desktop motherboards use the MS-7 numbering, and the code appears on the PCB itself. Confirm it and the revision match your board; schematics aid tracing rails and locating parts, while firmware should be flashed only after backing up the original chip.
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.