Boardview for the ASUS K43LY notebook mainboard, revision 3.1, identified by the ASUS part number 60-NB2MB1000-A14 and packed as a 139 KB ZIP archive. Inside you should find the layout file that shows component placement, part designators and net connections on both sides of the PCB. Technicians open such files in viewers like OpenBoardView, FlexBV or Boardviewer to locate test points, trace power rails and find which parts sit on a shorted net. Confirm the revision printed on the board matches 3.1 before relying on it.
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 @cynetitsolution. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.