Boardview in BRD format for board QD-GC9-MB-D; the name gives no laptop brand or model, and the trailing D likely marks the revision. OpenBoardView, FlexBV or Boardviewer can display it with part references, pin nets and both PCB sides. Use it to locate a component named in a schematic, trace a shorted line or find test pads for voltage checks. A copy marked (1) with the same size also exists, so the two are probably duplicates. Confirm the board code first.
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 @ITHINKHS. Enginerys does not host this file.
How to open a .brd file
The most common boardview extension. Several unrelated formats share it, which is why one viewer opens a .brd and another refuses it.