Boardview in .bdv format for a board named QD-Y16-MB-E, roughly 1 MB in size. The MB tag suggests the main board and the trailing E likely a revision, though no brand or model appears in the name. BDV files open in viewers like OpenBoardView, FlexBV or Boardviewer, which show component positions and net connections. Use it to find test points, locate parts named in a schematic and trace everything on a shorted rail, after confirming the code printed on the PCB matches this one.
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 @pepeelectronica. Enginerys does not host this file.
How to open a .bdv file
Text-based boardview produced by Honhan / Hon Hai test tooling, with lightly obfuscated content.