... Compatible with USB2.0/ 1.1. 2. No extemal power supply. 6. Built-in LED power indicator. USB 3.0 HUB ... 1. 2.Support for hot-swappable . 3.No extemal power supply. 4.The built-in current protection device . 5.small ... Coaxial Cable, Power Board.Categories of computer electronics: Headphone, Bluetooth Headphone, Earphone, Speaker, Mouse, keyboard,Game Headphone and Keyboard, Game Mouse, Gamepad, USB Hub ...