Package Included:1X Flysky FS-X6B 2.4G 8CH Mini Receiver4x Connect Cables PortsThese ports are for connecting the receiver to various models and flight controllers.• PWM signal port:GND, VCC. Outputs channels 1-6 PWM.• PPM signal port:Outputs standard PPM signal.• i-BUS signal port:Outputs i-Bus sig..