Boardview for the Acer Aspire E5-772 laptop, a Wistron design with the Brook BH platform name and board number 14276-1M. Wistron identifies its motherboards with five-digit numbers and a revision suffix, usually printed on the PCB silkscreen. The BRD file opens in viewers such as OpenBoardView, FlexBV or BoardViewer, showing component positions, net names and connections. Use it to find test points, follow power rails and track down shorts, and compare the board number on your PCB 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 @boardviews. 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.