MSI MS-7402 repair package in RAR format, 5.45 MB. No revision, platform or file list is given in the name, so treat the contents as unconfirmed until you unpack it. A package of this size often bundles a schematic PDF with boardview or BIOS files for a desktop board. Use it to locate components, test points and power sequencing signals during diagnosis. Make sure the revision marked on the board agrees with the documents, since layouts can change between versions.
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.