Boardview for the Quanta motherboard DA0P5NMB8E0, revision E, supplied in a small RAR archive. Boardview data shows the physical placement of every component and pad, with net names, so a technician can locate test points, probe voltages and find which part shares a shorted rail. After extraction, the file is opened with a viewer such as OpenBoardView, FlexBV or BoardViewer, depending on its format. Use it together with the schematic for the same board, and check the PCB number and revision before trusting pin locations.
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 @schematiclaptopramkushwaha. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.