Macally 7 Port Powered USB 2.0 Hub with 5V 2A Power Adapter & 3 foot long Cable (7PortHub) Connects up to 7 USB devices with your computer (Portable Hard Disk, Flash Drive, Webcam, MFP, Printer, Scanner, Mouse, Keyboard, Bluetooth Dongle and many others) Slim and Compact design takes up minimum space and keeps your desktop organized and tidy Comes with a 5V / 2A power adapter to ensure high-power devices (like external Hard-Disk or Optical-Drive) to have a CONSTANT & STABLE CONNECTION !! 3 feet long USB cable can run from the hub to the back of your Mac/PC USB 2.0 high-speed interface, supports data rates of 1.5 / 12 / 480 Mbps Plug-and-Play / Hot-Plugging / Driver Free for Mac & PC