Our aluminum hub conveniently adds seven high speed USB 2.0 ports to your desktop or laptop computer. The slim form factor saves space while the port placement and hard-mountable metal base keep the hub in place even when several USB devices are connected. The removable aluminum base can be hard-mounted to your desk. The hub easily slides from that base, and makes it convenient for travel as well. This hub must be powered by the included AC power supply adapter. Downstream ports have automatic connect and speed detection plus overcurrent protection with auto recovery. Add additional hubs to daisy-chain up to 127 devices. USB-IF certification ensures high speed data transfers up to 480 Mbps. Whether you are downloading or transferring spreadsheets, MP3 files, digital pictures, or video streams, our 7-port hub makes connecting several high speed USB 2.0 devices hassle-free. **** IMPORTANT! The power supply is required for proper operation of the hub. The power supply for the hub must be used in order for the hub to function properly. To connect the hub, you must first connect the power supply to the hub, and then to an AC wall outlet. After the hub is powered you will need to connect the hub to an available USB port on the computer using the provided USB cable. Once the hub is connected to the computer, you will then connect all of your USB devices. Please note that it may take up to 30 seconds for devices to be recognized by the computer. The amount of time required to recognize the device will depend upon the speed of your computer. Please note that your devices will not function until they are fully recognized by the computer. **** Input: One 5V/2A Power Male and Seven USB Type A Female Output: One USB Type B Female Specifications: Each 4-pin USB 2.0 port transmits 1.5/12/480 Mbps transfer rates per USB 1.0/1.1/2.0 specifications Fully compatible with USB 2.0 specification, and backward compatible with USB 1.1 specification Supports Windows® 98SE/ME/2000/XP/Vista/7 and Mac® OS X or later Supports up to 127 devices USB-IF certificated, CE & FCC approved IMPORTANT! The power supply is required for proper operation of the hub. Warranty: 1 year Color: Black Mfr: Cables To Go Weight: 0.740lbs System Requirements: Computer with USB 1.1 or 2.0 ports IMPORTANT! The power supply is required for proper operation of the hub.