The 1445692-4 is AMPMODU System 50 series Connector includes a wide variety of high density board-to-board (thru-hole and surface-mount) and cable-to-board connectors. The AMPMODU System 50 is composed of one and two-row receptacles and post headers on 0.050x0.100-inch (1.27x2.54mm) spacing between contacts for extreme density and efficient use of printed circuit board area. AMPMODU System 50 receptacles and header assemblies can be categorized in three groups, board-mount headers, board-mount receptacles and cable-to-board receptacles. Receptacle contacts and mating 0.0150inch (0.38mm) square posts are formed from high conductivity copper alloy and are selectively plated with gold to promote higher performance and reliability. Board-mounted thru-hole post headers and receptacle connectors are available for right-angle and vertical mating configurations. Surface-mounted connectors are available in vertical, double row styles for parallel stacking applications.