ESUMIC LED Cable Connector Extension Cable Wire 4 Pin Female to Female For SMD 5050 3528 RGB LED Strip Light 30cm Black 10 Pack (Black) 4 pin female connection cable adapter for LED RGB strip Connector type:4pin Female to Female length:approx30cm Easy to install, connecting strip to strip, strip to controller. On end to connect with LED RGB controller, the other end for LED RGB strips.