Boardview for the ASUS X550IU notebook, supplied as a 715 KB RAR archive. The name gives only the model and no board revision or mainboard code, so read the revision off the PCB and compare it with the data in the file before use. Once extracted, open it in a boardview program to locate parts, view the nets connected to a pin and find measurement points along the power path. That speeds up checks for shorted rails, missing voltages and damaged connectors on this board.
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.