A boardview (component placement) file for Sony hardware (board DA0HK1MB6E0, MBX-247). Shared as “Sony Vaio MBX-247 DA0HK1MB6E0 REV E BoardView.rar” — a .rar file, 87.9 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 @pkbiosbdv. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)