Large 135 MB ZIP archive for the MSI board MS-16J71 version 1.0. The name does not list the contents, so it may contain schematics, boardview, BIOS or photos for this mainboard. MSI uses its own MS-xxxxx numbering, where the version printed next to the number identifies the PCB revision. Before relying on any file inside, unpack it and confirm that the board number and version 1.0 match the silkscreen on the motherboard, then open each document with the appropriate viewer or programmer software.
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 @azvoltagemap. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.