This cable is for use with the Blinkin LED Driver. This cable converts the JST PH 7-pin connector on the Blinkin’ LED Driver module to a males 3-pin JST SM and male 4-pin JST SM connectors for connecting 5V WS2812 addressable LED and 12V RGB LED strips respectively. All of these connectors are keyed and locking for improved reliability in high vibration environments (like your robot!)