I currently have a gigabyte Z68X-UD3h-B3 rev 1.3 motherboard with a 750w PSU (as well as a GPU, CPU, ext..). I am trying to to connect all my USB components but have found that I can only plug in 3 of the 4. I currently have a Microsoft ergo 4000 keyboard, a razer Death adder mouse and a razer headset (Megalodon). When i try and plug in the forth (a razer Onza controller) one of the devices will fail. The current set up that I have found to work the best for the 3 the devices is the keyboard an mouse in the 2 USB 3.0 ports and the the headset in one of the 4 USB 2.0 ports. If i have it swapped the sound from the headset will skip every couple seconds. If I try to plug the control in to one of the 3 remaining USB 2.0 ports the headset will stop working (if i try to play a test tone it will say test failed). I have tried looking at the power draw is Device manager but haven't seen anything useful. I'm assuming it's either not enough power for the devices or not enough bandwidth. Is there anything that I can do short of buying a USB controller (or whatever the component is called).