The Aluratek AUH0204 USB 2.0 Hub provides the easiest way to expand your connectivity for your desktop or laptop. With the ever increasing number of USB devices such as MP3 player, printer, scanner, external hard drive, you always need more USB ports for your computer. AUH0204 is bus powered and with the attached cable design, you will able to take it anywhere you want without worrying about the power adapter* and USB cable. With Hi-Speed USB 2.0 at transfer rate of up to 480Mbps, you will able to transfer or backup your mp3"s, digital photos, and digital videos in no time. The AUH0204 USB 2.0 Hub comes with Aluratek"s 1 Year Limited Warranty.