MSI MS-6507 revision 0A service package, a 590 KB RAR archive. The file name gives the board number and the 0A revision but does not describe the contents, so open it with an archiver such as 7-Zip to confirm. Since the same board also exists as 0B, 1.0 and 5.0, make sure the revision marked on your PCB is 0A before using it to trace power rails, signals or test points. If a BIOS image is included, back up the chip first and verify size.
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.
7-ZipWinRARThe Unarchiver (macOS)