MSI MS-7154 motherboard archive, RAR format, 1.19 MB. Beyond the board number the name offers nothing, so whether this is a BIOS dump, a schematic or another file type has to be checked after unpacking. MSI numbers its desktop boards with the MS-7 prefix, printed on the PCB along with a revision. Make sure both match before relying on the data, and before writing any firmware save a full read of the existing chip and confirm the image size fits it.
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)