Reply to Help setting up the midi fighter 3D

I just bought the midifighter 3D. I am using traktor with an audio card for my cdj's and mixer and a traktor X1. My question is this. If my mac laptop only has 2 usb entries and my audio card uses one and the X1 uses the other how will I set up the midi fighter? With a USB hub, is the a certain type that works better like one thats powered oh one thats not, and do I have to make changes in the traktor settings or anything of the sort. I am new and still trying to figure this all out, I will appreciate any help i can get, Thanks