USB2.0 Hub - 4-PortSupports all data transfer rates up to 480MbpsCompact design with built-in cable (6-in.), perfect for travelPlug-and-play/hot-swappable allows you to add or remove a device at any timeDiagnostic LEDs indicate power and port statusBus-powered or self-poweredAll four ports support USB Battery Charging ( BC ) specification v1.2, providing up to 1.5A for fast charging of mobile devicesIncludes External Power Supply with NEMA 1-15P Plug (Input: 100-240V, 50/60Hz, 0.35A; Output: 5V, 2A)Includes a 2.6ft USB-A to Micro-B USB 2.0 cable to connect the U222-004-R to the External Power Supply.Compatible with all major operating systems