A 2.96 MB RAR archive named only G730, with no manufacturer, revision or content type given. The model code is ambiguous, so the device it covers should be verified after extraction rather than assumed. Archives like this commonly hold PDF schematics or board layout images used to trace signals, measure supply lines and locate connectors during repair. Open it with WinRAR or 7-Zip, read any title blocks on the pages, and match the board marking on the PCB to the drawings before working from them.
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 @Schematic_mobile_iran. 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.