178307-2 is a double-row board-mounting header connector from the TE Connectivity Dynamic D-3100D series, designed for horizontal mounting applications. This 16-position connector features a 3.81mm pin pitch, gold plating for reliable electrical contact, and a black housing color with X key configuration. The header includes an L bracket for secure mounting and is RoHS compliant. It is commonly used in industrial wire-to-board applications where reliable connections and compact design are required.