Archive identified only by the name M30, with no brand, board number or file type stated, totalling 167 KB as a RAR. M30 could refer to a model or board code, so open it to see whether it holds a boardview, schematic or firmware. Its small size suggests a single document or a compact dump. Before using any of the contents, match the identifiers against the markings on your device, and if it contains a flash image, save the original chip contents and confirm the image size fits the chip.
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 @hrtechno. 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.