Vex robotics pneumatics kits vex 275 1417 this pneumatic solenoid driver cable is this same driver cable that is included in the pneumatic kitson one end of the driver cable is the standard 3 wire pwm connector which connects to a vex microcontroller digital output on the other end is the 2 wire pneumatic connector which mates directly to the pneumatic solenoidthis cable takes the digital on off signal and controls the 5v power applied to a pneumatic solenoid the pneumatic solenoid driv