Hey.... that is... just a normal external HDD.The only thin different about this is that the USB connector is inside the cabinet and the other connector is in the body of the drive so when u push the drive in,there is a connection and it works like a normal HDD.
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Do u want 1??well....u do get ready made external HDD but I recommend u Make 1 on u r own...Yes...u can .....Get a new PATA HDD (IDE) of u r choice 40 gig/80 gig etc ....what....ever...Now get a external HDD cansing which will ship your HDD and will change the PATA interface to USB 2.0 and also give your external HDD a sleek look .......................Well I bought 1 for Rs 400...........................Just connect the IDE cable to the cable in the casing...... make sure there is driver CD with the casing------------------------------------If your mobo supports firewire then u get a firewire case.......... Good Luck!!!!!!!!!!!