Cavalry 80GB 2.5" External Hard Drive Mobile Solution with One Touch OS Backup USB 2.0 Capacities 80GB, PATA Interface, Sustained data transfer rates up to 23MB/sec, 1.5 ms average seek time, 133MB/sec max bus speed, 8MB Cache Buffer, S.M.A.R.T. compliance features 4200 RPM This unit is the only one out there that backs up the data files and the OS! USB 2.0 Contains Fujitsu Hard Drive