ELEGIANT Portable USB 3.1/3.0 Type C USB-C 4 Ports Hub Adapter for PC Chromebook MacBook Windows XP Windows 7 8 and Mac OS Linux 6 Four Ports USB 3.0 Port Hub Adapter For For New MacBook, Surface Pro 4 etc. Tablet laptop and Other Type-C Supported Devicesinterface support plug and play. hot swap, easy to use and carry Support USB 3.1/3.0 super speed (5Gbps) transmission, downward compatible USB2.0 The devices connected to the 4-Port USB 3.0 Hub must not exceed a combined current of 5 volts 900 mAh. Type C connector is the new design for USB 3.1 & Macbook & Laptop The power supply is not included.