MSI MS-6702 package, the largest in this group at 6.62 MB, compressed as a zip archive. Its name lists only the brand and MSI board code, so revision, chipset and file types have to be checked after unpacking. The size suggests a substantial schematic or a bundle of several files. Use circuit diagrams to follow power delivery, find shorts and locate components, and confirm the MS- number and revision on the PCB first. Any BIOS image should be flashed only after saving 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.