Razer Chroma Light Strip Sets - What is the wire connection that's used!

having issues getting the lights setup due to only have 3 ports and only being able to have 120 lights per port. If i could figure out what the connection that's used to attached each strip together (I know its a 3 pin something, but hopefully knows exactly what I need so I can extend the reach between light strips. If I am unable to figure that out, has anyone used 2 wireless controllers and been able to use them successfully? What i was told is that Synapse will only recognize 1 but control both?