Boardview in CAD format for the GL502VS at revision 2.1, a model name ASUS uses for its ROG gaming laptops. Files with the .cad extension open in boardview viewers such as OpenBoardView or FlexBV, which show parts, pins and nets. It helps locate components around the GPU and CPU power stages, find test points and track down shorts. Make sure the revision on the motherboard matches 2.1 before relying on part positions.
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 @notebookschematic. Enginerys does not host this file.
How to open a .cad file
GenCAD text export, the usual format for Compal, Quanta, Wistron and Dell / HP / Lenovo laptop boards.
OpenBoardViewFlexBVBoardViewer