XONE:K2 as an add-on controller for traktor Kontrol S4

XONE:K2 as an add-on controller for traktor Kontrol S4

Hi everybody,

I am writing to you because I have some problems with the connection of my xone k2 to the kontrol S4.
I know that it’s possible to put the k2 as a effect controller but I am very bad in electronics.

How can I set up my k2 to the traktor logiciel ? Is it possible to connect the S4 and the k2 to the computer only with the USB cables ? Or i need some other cables ?

Furthermore I don’t really understand the MIDI… Can you explain me ?

I will be very grateful if somebody can help me.
(Sorry for my bad english…)