Tracplus RockAIR Owner's Manual page 10

Adding and removing the RockAIR from the clip
To attach the RockAIR into the mounting clip, align and insert the left side of the RockAIR
into the mounting clip as shown and rotate downwards until the RockAIR clicks
into place.
To remove the RockAIR from the mounting clip, move the top of the right side of the clip
away from the RockAIR and lift the RockAIR clear.
Connecting to aircraft power (9-30 DC)
The RockAIR can be connected to the avionics DC bus or vehicle power supply via
the 4-way Molex connector on the rear of the device. An external 1-amp fuse must be
used when connecting the RockAIR in this way. The RockAIR will operate correctly with
a voltage of between 9-30vDC, and has passed DO160G testing for over-voltage and
reversed polarity.
When connected to aircraft power in this way, the RockAIR will automatically turn on and
off with external power².
Connection to power via USB (5vDC)
The RockAIR can be powered using the MicroUSB connector on the rear of the device.
If using a USB adapter other than the MGF DualMicro 28v Rapid Charger provided with
the RockAIR Professional, it is important that the adapter chosen can provide minimum
1.3A and max 5v on USB.
When connected to USB power in this way, the RockAIR will automatically turn on and
off with external power².
² This is the default behaviour of the RockAIR. Changing the configuration may change this behaviour.
Pin 1 +Ve (9-30vDC)
Pin 2 -Ve(Ground)
Pin 3 RS232 Tx a(Output)
Pin 4 RS232 Rx (Input)
As looking at the back of the RockAIR