Archive named only 206, a 2.43 MB RAR file with no brand, model or board number given. The name tells nothing about the device or document type, so extraction is the only way to see whether it holds schematics, a layout, firmware or service notes. Repair archives of this kind normally serve for tracing circuits, finding parts and test points or reflashing a device. Inspect the contents with any RAR-capable tool, identify the exact model and match the PCB revision before using anything inside.
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 @tamirat_moobile. 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.