This 7 Port USB 20 Hub connects to one USB 20 port on a Mac or PC computer adding seven USB 20 ports - allowing you to maximize the number of high speed USB peripherals connected to your computer The hub supports cascaded installation with other USB 20 hubs supporting up to 127 USB 20 device connections - a scalable solution for connecting multiple USB devices to a single host computerThe 7 port hub includes a power adapter but can be powered through USB bus connection to the host computer - allowing you to install the hub as needed without worrying about the availability of a power outlet  Backward compatible with USB 11 devices  High-speed data transfer rates of up to 480 Mbitssec  Self-powered or bus-powered  Comes complete with a wall-mount power adapter and a 3 ft USB 20 AB male-to-male cable  Connect up to seven USB devices  Hot swap capabilities allow you to connect and disconnect devices without rebooting  PC and Mac compatible  Lightweight convenient to carryCase Colour BlackDepth 80 cmForm Factor USB HubHeight 25 cmInterface 7 x USB 20Operating Systems Supported Windows 98SE • ME • 2000 • XP • 2003 and up • Mac OS 86 or up (OS 1024 needed for USB 20 speeds)Product Type USB HubWarranty 1 Year WarrantyWeight 027 kgWidth 47 cm