Zip archive tied to the MSI MS-6796 board, 4.03 MB in size. The name gives only the MSI project code, so whether it holds a schematic, boardview or BIOS image is not stated and should be checked after extraction. MS-numbers are MSI's internal design codes and are silkscreened on the PCB, usually near the slots or board edge, so confirm that code and the revision before using anything inside. Schematics open in a PDF viewer, while a BIOS dump should only be written after backing up the original chip.
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 .zip file
Compressed archive that every operating system opens without extra software.