RAR archive of 5.53 MB covering the MSI MS-7082 motherboard. No revision or content details are present in the name, so the files inside should be checked after extraction. A package of this size may hold a full schematic or a combination of documents, but that is not confirmed. Schematics help trace power sequencing and signals, boardviews show component and test-point locations. MSI uses the MS-7xxx scheme for desktop boards; ensure the PCB revision matches what the documents describe.
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.