I have a 2.3/16/256 Macbook Pro Retina I purchased a USB 3.0 hub by Uspeed. Hub works but I do have some observations: 1. The USB superdrive will not work through the hub. Both Mac and Windows seem to recognize the device but slipping a CD does not work. The drive does not pull it in. If I plug the superdrive direct into the mac...works perfectly. 2. I have 2 external drives in separate go-flex enclosures with USB 3 adapters. The drives work but the Mac often has trouble recognizing that the drive are there when plugged into the hub. Both go through the hub. If I leave them plugged into the hub and reboot the mac, it can take minute (5) just to boot Mac OS. I have read #2 is a problem with Mac OS but thought I'd see if anyone had any new information on this problem.