First of all:
You need to choose if you want to use use SBUS, IBUS or PPM.
The Yellow wire is PPM and the white wire is SBUS.
I suggest you use SBUS because it is faster and simply better 
That means you only need to connect the White Cable to the Port labeled “SBUS”.
Do not forgot to choose “SBUS” and “Serial Based Receiver” in the configuration Tab and enable Serial RX in the Ports Tab (UART 1).