Features:Transform one of your computer's USB ports into seven with this USB hub.The USB 3.0 HUB is designed especially for laptop, desktop computer.Plug and for play, USB-powered (no external power or battery needed).7 Blue LEDs,when the lights are on,this interface is properly connected and working status is known in real for time.This product adopts excellent electronic devices to ensure stable operation, and the computer automatically.recognizes and installs without driver, plug and for play, and is convenient to use. Specifications:Material:PlasticSize:Approx.15x3.7x2.5cm/5.91x1.46x0.98inNet Weight:124g Note:Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x USB Hub