betafpv nano v2 pinning (connections)

Hello,

I am trying to connect a betafpv nano v2 module as a receiver on a plane to have a better return on MAVlink, unfortunately I need to figure and the uart port( if there is any).I have my suspicions that it is the connector on the bottom of the PCB, but even if it was there is no documentation online or diagrams telling me which is 5v, gnd, Rx and Tx. Maybe somebody better than me at this would be able to help.

Thanks.

Try the Manual