LaCie 250GB d2 External Hard Drive Extreme with USB2.0 and FireWire 400/800 Interfaces (Model 300770) FireWire 800, FireWire 400, i.Link, USB 1.1, and USB 2.0 connectivity Up to 800 Mbps per bus and up to 61 MB/s per drive burst Second-generation FireWire 800 chipset (up to 50 percent faster for small blocks) Stackable, upright, rack-mount or daisy-chain configurations Mac and PC compatible