40-Pin Dual-Row Breakaway at 0.100" Pitch
The 77313-138-40LF: This is a breakaway design — the strip can be snapped to a shorter length if the full 40 positions aren't needed, though this variant ships fully loaded with all 40 pins in place.
Board Fit: Through-Hole Solder, 0.150" Post Length
What It Connects To: Board-to-Board or Cable
The connector style is listed as Board to Board or Cable.
