Board Layout Fit for a 14-Position 3.96mm Header
The 26-19-2141: This is a 14-circuit vertical pin header on 3.96mm pitch from the Molex KK family. The polarizing wall (RPIN VRA in the description) prevents reverse mating with the matching housing — a half-turn loose won't happen here, because the keying forces the correct orientation before the pins engage. The vertical orientation means the header stands perpendicular to the PCB, which is the standard layout for wire-to-board connections where the cable exits upward.