The 39-29-0043 is a 4-position 2-row Vertical Header with gold-plated brass contacts. The 5566 series PCB header should be used with standard Mini-Fit? female terminals. The PCB header comes with a natural nylon resin housing. This headers is suitable for power and wire-to-board applications. It mates with 5557 Mini-Fit Jr.? receptacle housing.