MSI mainboard archive of 1.51 MB whose name refers to ms13 and DVT, the design verification test stage of development. The exact board number is not fully given, so the target model must be confirmed from the contents. DVT-stage documents can differ from final production hardware, yet they still help trace rails, signals and part locations. Check the title block in the drawings against the board number and revision printed on the PCB, and treat any mismatched values with caution before replacing components.
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 @generalschematics. 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.