A boardview (component placement) file for ASUS hardware. Shared as “ASUS_X550CC_REV_2.0 _BoardView.rar” — a .rar file, 1.14 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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)