RAR package of 901 KB for the MSI MS-7113 motherboard. The name gives only the board number, without a revision or document type, so the contents are unverified until opened. A small archive like this may contain a BIOS dump or a compact schematic for tracing power and signals. MSI prints MS-7xxx codes and revisions directly on its desktop boards. Confirm both before use, and if you are flashing firmware, read and keep the original chip contents first.
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)