The 3-643814-2 is a 2-position 1-row Wire-to-Post Closed-end Receptacle with socket type tin-plated copper alloy contacts and standard glass-filled nylon housing. The strain relief IDC connector has nickel pated underplate, locking lance contact retention, locking ramp mating retention and polarization mating alignment. It is suitable for use with the MTA-100 series header.