Form Factor: 2.5" Interface: USB 2.0 Features: Ultimate Portability - the slim, compact design fits in the palm of your hand, providing ultimate portability Easy to Use - simply plug in the USB cable and use the included ArcSoft Total Media Backup software to quickly and easily begin preserving digital memories and data Stylish - the sleek, stylish silver design complements any PC or Mac desktop, laptop and netbook Product Reliability