Archive tied to the MSI MS-7392 motherboard at revision 1.2, a 1.12 MB RAR package whose name does not say whether it holds a schematic, a boardview or both. Unpack it and inspect the contents before planning a repair around it. Documentation of this kind is typically used to follow power rails, identify MOSFETs and controllers in the CPU VRM, and check signal paths between the chipset and slots. MSI labels its boards with MS-numbers on the PCB, and since revision 1.2 is stated, the silkscreen revision should be checked for a match.
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 @cyberlanelectonik. 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.