Velocity Micro Vmultra Drive External Peripheral (Vmultradrive 102) 500GB external HDD help back up important documents External DVD RW Combo drive - great for Ultrabook devices, All-in-Ones, and netbooks! SD Card and USB 3.0 hub - add connectivity to your device Connects via USB 3.0 for lightning fast transfers Powered by the USB port, the VMultra Drive provides complete plug and play functionality with virtually no set up. Connect to a wall socket only when using multiple applications at once.