Product Type: USB Hub, USB 2.0 high speed 480MBPS support, Prevent damage, No external power required, Low power consumption compatible, Bus-power limit current protection: 500mA. This Hi-Speed USB 2.0, 4-Port Ultra-Mini Hub provides 4 downstream USB ports for Plug-and-Play connectivity to your USB 1.1 and USB 2.0 devices. A perfect lightweight travel tool, this compact Hub tucks easily into the pocket of your laptop bag and requires no extra power supply. It offers an ideal way to connect anywhere you need fast, handy access to your USB devices.