thanks for that but what USB HUB To buy tell me what adpter need to get the usb hub please send to me more proof
U3's have their own power bricks or some use PSU adapters. So the USB hub is not as big of thing with them as it is with say a compac that runs off of usb power.
My biggest advice is get a R1 and use Crazy Guy's firmware to control you U3's. It will make your life easy with the zombie detection. I used a cheap usb 2.0 hub with the R1 and U3's and it worked fine.