Package for the MSI MS-7088 mainboard, compressed as RAR at 2.30 MB. The name provides no revision, version or description of the contents, so treat it as unverified until unpacked and inspected. Such archives usually carry schematics, boardview data or BIOS dumps used in board-level repair. The MS-7xxx number is MSI's own desktop board identifier. Match the PCB revision against the files, and before writing any firmware, read and store the existing chip contents and confirm the image size fits.
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.