Features: 1) Supports plug and play and hot-swappable 2) Supports USB power saving mode 3) No external power required 4) Download files via USB high-speed transfer rate up to 480Mbps 5) Supports Windows98, Me, 2000, XP, MAC and Linux 6) Driver installation is not required for Windows ME and Windows XP 7) Supports build-in 2.5" HDD, optional up to 100GB 8) LCD display panel 9) Laptop data backup 10) Supports work standalone 11) Two internal Li-ion batteries and re-chargeable circuit 12) Dimension: 140 x 85 x 35mm 13) Product weight: 100g Packing: color box