Boardview for the Asus ROG Strix Z690-E Gaming WiFi desktop motherboard, revision 1.03X. The 4.59 MB CAD file opens in OpenBoardView, FlexBV and similar tools, giving a searchable map of components, designators and nets. Technicians use it to follow VRM and memory supply rails, locate the BIOS chip and Super I/O, probe test points and track down a part shorting a rail to ground. Check that the revision printed on the board matches 1.03X, since layouts can differ between revisions.
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 @boardviews. 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.