RAR archive of about 2.00 MB labelled 3CCWL-RH-10, which reads like a board code with revision 1.0, although the name names no laptop brand or model and the contents are not described. Files with this kind of naming often hold a BIOS dump or schematic package for a single motherboard. Unpack it with WinRAR or 7-Zip and look at what is inside before using it. Compare the code and revision with the silkscreen on the PCB, and if it turns out to be firmware, save a copy of the original flash chip before writing anything.
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 @schematicslaptop. 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.