Just for information, the USB ports in the early 2011 MacBook Pro (8,2) are indeed high-powered. I am able to run an external DVD drive (OWC slimline) using a single USB cable instead of the "dual USB" cable usually required for external DVD drives. Not that big of a deal, but it is nice to not need a special cable. Meanwhile, the Data Doubler installation went without a hitch. OCZ Vertex 2 as a boot drive and Apple SSD in the optical bay.