Akitio Neutrino U3+ SATA to FireWire 800, 400 and USB 3.0, 2.0, 2.5" Portable Hard Drive Mac PC Enclosure USB 3.0 SuperSpeed interface, USB 2.0 backwards compatible FireWire 800 interface, FireWire 400 backwards compatible Designed for 2.5" drives up to 12.5mm Large heatsink for passive cooling Durable, compact, portable, Stackable and Fanless