RAR package of 1.77 MB named for board code 4MXS with suffix RH-02, which looks like a revision marking. Its contents are not described in the name, so extract it with WinRAR or 7-Zip and identify the files before use. Do not confuse it with the 4MXSV or 4MXSP codes, which appear to be separate boards. Whether you are tracing a short or preparing to reflash an SPI chip, the code printed on the PCB must match, and an original firmware backup should always be made 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 @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.