Hi Dave, the link needs to be plugged into Can 2 so you can place the hub anywhere on Can 2 and then what ever else you need can then plug into the hub. The joy of the canbus is that you can basically plug in any component to any available spot and it works. On the WKG there was just one Canbus so it really didn't matter but to improve data rates, DJI introduced a second Canbus on the A2. The critical thing here is to make sure the right components are connected to the right canbus.