Freecom Toughdrive Custom 250GB
USB, 250 GB, 5400 rpm, 2.5", Hot Swap, Portable, Interface: USB, Interface Type: USB 2.0, Internal/External: Extern, Storage capacity: 250.0 GB, Cache memory: 8.0 MB, Size: 2.5", Revolutions per min: 5400 rpm, Access time: 12.0 ms