A boardview (component placement) file (board LA-D121P). Shared as “520 ES1-521 ES1-522 B5W1E LA-D121P.bdv” — a .bdv file, 542 KB.
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 @abgm_manutencao_esquemas. 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.
OpenBoardViewFlexBVBoardViewer