A boardview (component placement) file (board 6050A2509901). Shared as “AFS DK10FG 6050A2509901-MB-A02 (BDV).rar” — a .rar file, 86.4 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 @afsbiosfree. 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)