Fashion Stylish and Rest-pocket Easy to Carry. All the USB Ports Have Proper Intervals, Easy to Plug. Enable to Connect all Kinds of USB DeviceUSB 2.0 Version Specification. Transmission Speed up to 480MbpsEasy Plug and Play ,Support hot PlugProvided Power Supply by USB,USB Port can Provide with 5V (maximum) powerIndividual Port Overcurrent Protection. Product have FCC Certification of USA,CE Certification of Europe and other International Authentication. Specifications Type: V2.0 Specifications (Support USB 1.1 / 1.0). 4 Port Slots. Size: 120 x 30 x 20 mm (L*W*H) Net Weight: 72g. Power Input: AC 110V~240V DC 5V 2A (Make). Power Output: 5V 500mA / Port. SYSTEMWindows? 98SE / Me / 2000 / XP / Vista?Macintosh? OS 9.0~9.2.2/Mac OS×10.1or later