MSI MS-7101 material packed as a RAR file of 2.57 MB. The file name lists no revision and no content type, so whether it is a schematic, boardview or firmware set has to be checked after unpacking with WinRAR or 7-Zip. The MS-7xxx code is MSI's own identifier for desktop motherboards and is usually silkscreened on the board. Compare that marking and the revision with the documents, and if a BIOS image is included, read and keep the original SPI contents before flashing.
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.