A boardview (component placement) file (board DA0LX6MB6G1). Shared as “DA0LX6MB6G1 (BDV).bdv” — a .bdv file, 1.12 MB.
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 @alischematics. 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.