Pay attention when connecting the USB wire: Do not short circuit the connector for the Control Panel/Bluetooth Module!
Bluetooth-PIN: 1111
Connection of servos, devices:

Tail servo = Tail rotor servo
Channel 1...3 = Swashplate servos
Channel 4 = Swashplate servo 4 / Programmable for ESC/Throttle output (special use on 5.1 Gov. Pro)
Rudder/Aux2 = single I/O and power supply
Collective/ESC = single I/O and power supply
Aileron = single I/O and power supply
Elevator = single I/O and power supply
Aux = single I/O and power supply

CP = Control panel or bluetooth
Sensor = VBar sensor
Servo = single I/O - for Throttle servo on 5.1 Gov Pro only!
Sensor II = single I/O - for RPM sensor on 5.1 Gov Pro only!

RX 1 = Satellite 1
RX 2 = Satellite 2

All here: brown/black wire pointing towards the upper (label) side.
Connectors for standard reciever:
Tail servo = Tail rotor servo
Channel 1...3 = Swashplate servos
Channel 4 = Swashplate servo 4 / Programmable for ESC/Throttle output (special use on 5.1 Gov. Pro)
Rudder/Aux2 = Rudder signal from RX
Collective/ESC = Collective signal from RX
Aileron = Aileron signal from RX
Elevator = Elevator Signal from RX
Aux = Gyro gain signal from RX
RX 1 = not used
RX 2 = not used
Connectors for single line (Jeti, Futaba RASST, Graupner HOTT) and Futaba S-Bus as well as Multiplex M-Link:
Tail servo = Tail rotor servo
Channel 1...3 = Swashplate servos
Channel 4 = Swashplate servo 4 / Programmable for ESC/Throttle output (special use on 5.1 Gov. Pro)
Rudder/Aux2 = additional out, can be used for ext. Gov
Collective/ESC = Throttle / ESC out
Aileron = not used
Elevator = not used
Aux = RX signal input
RX 1 = not used
RX 2 = not used
Connectors for Spektrum satellites:
Tail servo = Tail rotor servo
Channel 1...3 = Swashplate servos
Channel 4 = Swashplate servo 4 / Programmable for ESC/Throttle output (special use on 5.1 Gov. Pro)
Rudder/Aux2 = additional out, can be used for ext. Gov
Collective/ESC = Throttle / ESC out
Aileron = not used
Elevator = not used
Aux = not used
RX 1 = Satellite 1
RX 2 = Satellite 2