MSI MS-6507 revision 1.0 files in a 550 KB RAR archive. The name states the board code and revision only, so the contents, whether circuit diagram or firmware, need checking after unpacking; WinRAR or 7-Zip will open it. Other revisions of the same board, such as 0A, 0B and 5.0, are separate files, so confirm that the PCB silkscreen reads 1.0 before following component references. Use the material for tracing supply rails, locating test points or recovering a corrupted BIOS.
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.