Compressed package for MSI motherboard MS-7062, 3.90 MB in RAR format. Beyond the model code the name says nothing about revision or contents, so open it to see whether it holds a service schematic, a firmware dump or support files. The MS-7xxx pattern is MSI's in-house desktop board numbering, and one code can cover several PCB revisions. Confirm the silkscreened revision first, and if a BIOS image is included, back up the original flash chip before programming 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 @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.