Cavalry 250GB 3.5" External Hard Drive Mobile Solution with USB 2.0 Firewire 400 Combo Oxford 911 Chipset Capacities 250GB, PATA Interface, Sustained data transfer rates up to 150MB/sec, 10 ms average seek time, 133MB/sec max bus speed, 16MB Cache Buffer, S.M.A.R.T. compliance features 7200 RPM USB 2.0 Firewire 400 Contains Maxtor Hard Drive