A boardview (component placement) file (board 6050A3087503). Shared as “VELLFIRE-6050A3087503-MB-A01 (BDV).cad” — a .cad file, 10.1 MB.
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 @alischematics. 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