Boardview for the ASUS X450CC laptop mainboard, packed in a RAR archive of 158 KB; the name carries a copy suffix, so it may duplicate another upload of the same board. No board revision is stated in the name. A boardview lets a technician find components, nets and test points by part location, follow power rails and check where a short sits. Extract it and open the layout in a viewer such as OpenBoardView or FlexBV, then confirm the revision printed on the PCB matches before trusting pinouts.
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 @cyberlanelectonik. 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.