Boardview for the MSI MS-7C51 desktop motherboard, revision 1.0, provided as a 4.31 MB CAD file. MS-7 numbers are MSI's codes for desktop boards, and the code plus revision are printed on the PCB, so check both before trusting part positions. The CAD format is readable in FlexBV, OpenBoardView and similar viewers. It lets a technician locate VRM components, standby circuitry and the BIOS chip, follow nets between them and choose test points when tracking a short or missing rail.
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.