Specifications: * Hi-Speed USB hub supports data transfer rates of up to 480 Mbps and up to 127 USB devices * USB 1.1 backwards compatible * Fans: (2) USB powered * Fan dimensions: 70 x 70 x 10 mm (2.75 x 2.75 x 0.4 in.) * Air flow: 28 cfm * Fan noise: 24 dBA (maximum) * Fan speed: 1500 rpm * Cables: USB Standard-A to DC, 50 cm (20 in.); USB Standard-A to Mini-B, 43 cm (17 in.) * 310 x 300 x 152 mm (12.25 x 12 x 6 in.)*System requirements: * Any USB-enabled operating system * Available USB portPackage contents: * Notebook Computer Cooling Stand with Hi-Speed USB Hub * USB cables and quick install guide