MSI board MS-1422 at revision 0A, delivered as a 946 KB RAR archive. The name gives no laptop model or document type, though a schematic is the probable content. The MS-14xx pattern belongs to MSI's own notebook board numbering. With the diagram, a technician can trace battery and adapter rails, check the enable and power-good signals and locate the parts responsible for a short. Read the board number and revision printed on the PCB and make sure they match MS-1422 rev 0A first.
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.