I finally decided to replace my old MacPro with a new Mac Mini and an external USB SuperDrive. Since all of the Mini's 4 USB ports are populated with stuff I already own, I decided to purchase a USB 3 hub. After much research, I found a new 7 port USB 3 hub that actually has a power supply with enough capacity to actually power all 7 ports (believe it or not many multi-port USB hubs do not have enough power to supply all of their ports simultaneously). I settled on a 7 port USB 3 hub. What is unique about the hub is that it allows USB 2 an 1.1 devices to be connected to it without slowing down other USB 3 devices that may be on the hub. To my dismay, when I plugged in the SuperDrive, I got an error message that there was insufficient power for the device. I checked the out the power supply and the individual ports and determined that the power supplied met the USB standard. I tried all the ports with the only the SuperDrive attached and kept getting the same error. After contacting the hub manufacturer's tech support they confirmed that there is an Apple "proprietary hand shake" that goes on between the Mini (as well as Mac Air's, etc.) and the SuperDrive that will not pass through the hub's controller chip. Turns out many USB hubs may not work with the SuperDrive and various new generation Mac notebooks and the Mini. The hub works fine with the Mini and other USB devices, but not the SuperDrive.