Boardview for the Apple A2179 MacBook logic board 820-01958-A, as a 603 KB BRD file. Apple marks logic boards with 820-xxxxx numbers, and the suffix letter indicates revision. The layout opens in viewers such as OpenBoardView or FlexBV and shows component positions, nets and test points. Use it for tracing rails, locating shorted capacitors and finding connectors. Match the 820 number printed on the board before relying on part 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 @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.