mmunication terminals, network equipment, and moreility. It is a versatile and high-reliability connecting device in the fields of industrial control equipment, instrumentation, coWD-3017-40 is an industrial-grade 9-pin (DE9) reverse-mounted D-SUB (D-type ultra-small) connector socket, specifically designed for high-density signal transmission scenarios on PCB boards. It adopts an ultra-thin and integrated structure, balancing high connection reliability, excellent electrical performance, and compact space adaptab