A 2.41 MB zip archive labeled for the MSI MS-6787 motherboard. The name carries no information about contents, revision or variant, so treat it as an unidentified MSI package until you inspect what it holds. MSI identifies its boards by these MS codes, found on the PCB itself, and several retail models can share one code with differing revisions. Confirm the match before relying on it. Typical uses include tracing rails with a schematic or restoring corrupted firmware via an SPI or LPC programmer.
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.