I am looking for some clarification on this- I have search and read tons of threads with few definitive answers. I want to plug in 2 USB 2.0 3.5" hard drives to a hub on my AE. Both hard drives have external power (no thumb drives, or 2.5" externals). Do I need a powered hub? I know that in the apple support docs, it only ever mentions powered hubs. But if neither hard drive is going to be requesting USB power, is this really necessary? Thank you very much to anyone that can provide clarification on this.