Compressed archive (RAR, about 1.39 MB) linked to the MSI MS-7033 sibling model MS-7032, its only stated detail being that board number. No revision, document type or firmware version appears in the name, so open it and check what it actually holds. Typical content is a PDF schematic for measuring rails and signals, or a BIOS dump to write to the SPI or FWH chip with a programmer. MSI uses the MS-7xxx code for its own boards, and the revision on the PCB should match whatever revision the documents show.
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.