Boardview file in .cad format for the MSI MS-7267 motherboard, version 5.0 according to the name, 3.52 MB in size. MS-7xxx is MSI's desktop mainboard numbering. A boardview shows the physical position of every component, pin and net on both board sides. Technicians use it to locate test points, find parts named in a schematic and check which pins share a shorted net. Open it with a compatible boardview viewer, and confirm that the PCB revision matches version 5.0.
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 @pepeelectronica. 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.