Boardview for the ASUS TUF FA506ICB gaming laptop, supplied as a 370 KB RAR archive. The name gives only the model code, so no board number or revision is stated. Technicians open the extracted file in a boardview viewer such as FlexBV or OpenBoardView to locate components, follow nets between parts and find test points when chasing a short or a missing power rail. Before trusting it, compare the board number and revision silkscreened on the PCB with the data in the file, since ASUS often ships several board versions under one model name.
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 @BoardSchematic. 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.