I Can't connect Iphone to computer?

Well I can connect my phone to my computer, but not the way I would like. When I connect it, it installs, however in devices it goes into the unrecognized tab and iTunes does not pick it up. I tried troubleshooting the problem and it says the connection will only work with USB 2.0. All of my ports are 3.0. The weird thing is that my brother has the exact same computer and phone and his does connect. ( they are the Alienware 17's) Any help would be greatly appreciated.

Happens with my iphone all the time. I just un-plug and plug it back in until it works.

Check your USB port and phone cable. Second restart your computer and mobile also again connect