it needs to be USB 2.0, you can plug them into you bluray player and tv and watch your terrabyte of whatever movies

and actually copy files at 30mbs which gives 10 minutes for 70GB or so

you can use them to record on too, if your tv can record, you just need a USB drive to record and rewind tv like with uk freeview, most tv's are thick and you can only record what your watching