Boardview in BRD format for the Acer Predator Helios 300 G3-571 laptop, Compal board LA-E921P. Compal, the ODM that produces many Acer gaming notebooks, uses the LA-xxxxP numbering seen here. The BRD file opens in OpenBoardView, FlexBV or Boardviewer, giving component locations, net names and test points for diagnosing power faults, charging problems or GPU rail shorts. The revision is not stated in the name, so compare the layout with the board and confirm LA-E921P is printed on it.
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.