Hi guys, just got my cubes today and having some issues... All setup etc. is done and works fine. My first cube is the only one on a 500W PSU thought makes only 17GH/s and i can't see why The second and third share one 750W PSU and don't work both at the same time. If i unplug one of them the other start to hash and after a few mins all the ooooo on the top turn to xxxxx and it stops. Any ideas would be greatly appreciated!