Boardview for the board code-named Dalmore 13, the UMA variant with integrated graphics, marked A00 and dated 0321. The file is a .brd generated from gerber data and packed in ZIP. No brand or board number is given in the name, so confirm the match against the PCB markings. BRD files open in OpenBoardView, FlexBV or Boardviewer and show part placement, net names and test points. That makes it useful for following power rails, checking shorts and finding components when no schematic is at hand.
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 @SCHEMATICWORLD. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.