RAR package for the MSI MS-7808 motherboard, revision 0A, roughly 685 KB. The name does not reveal whether it contains a schematic, a boardview or both, so check the contents after extraction. MS-7808 belongs to MSI's own desktop board numbering, and a 0A revision code typically marks an early version of the design. Make sure the PCB markings match before trusting reference designators or rail names, then use it to trace power delivery, standby logic and signal paths while repairing a board that will not start.
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.