Product features:1， ultra-high speed start HUB， each interface transmission speed can be up to 5 gb/s;2， 4 ports usb 3.0 interface + 3 ports usb 2.0 interface， each interface with a separate switch， energy saving environmental protection and meet the application needs of customers;3， 8 ports HUB: each interface with power indicator light， use more convenient;4， with 60cm usb3.0 data cable， portable easy to use;5， with 1 USB intelligent charging， built-in 2 a / 1 a automatic control chip， can according to the requirements of mobile devices such as intelligent control big/small current supply;6， provide an external power supply interface， when using big functions USB device to increase power supply can be connected to external power supply at any time. Product color: black/whiteProduct features: 4 ports usb 3.0 interface + 3 ports usb 2.0 interface，， 1 port charging interfaceSupport system: Windows XP / 7/8