A very handy piece of kit to have tbh.
I bought an Integral which is almost exactly the same, cept it has eSATA support also, for around 11 pound.
Threw in an old laptop 2.5 drive and presto u have 40/60/80 gig storage on the move.
The Integral comes with a nice wallet that carries the drive and at a stretch will fit 2 cables in it also.
For about 5 pound ? Definately recomend one. Priceless for small time backup and general pc work.