Connecting Pixhawk 2.1 Cube to FrSky X8R

Hi I’m trying to connect my new Pixhawk 2.1 Cube to the FrSky X8R receiver. The connector that came with the kit had 6 slots for the pins from the receiver, but the receiver itself has four pins. Does anyone know of a good way to connect these two, or a website that sells a connector? Thanks in advance!

Good day,
on sbus pin of your x8r you have 3 pins, one is the vcc… one gnd and the last one is signal, same is for the rcin port for the main board of the fc