Well to make a long story short , switched from At&T to Comcast and the All in one wireless router / modem is not compatiable with all 3 of my Xbox 360s ( they dont Connect they can see it but simply fail. The model that i have from comcast is the two in one Arris modem and router. Know i find this very wierd since my Ipads, Iphones,Wii, Wii U, Ps 3, Laptops, 3 other Pcs and my HTPC have no problems with this. What i want to do is add another router that is Xbox 360 supported, how tough is it to do? I know Google is my friend but i like the expierience of fellow Hardocpers!