USB 3.0 Hub USB Hub 3.0 Multi USB Splitter 4/7 Port Multiple Expander

Please notice:(1)DO not used for charging,it is used for offering more usb ports to transfer file.(2) The power supply can solve the problem of insufficient power supply, if you need work with a hard disk , then you should choose the with power supply , and please note ,please don't use more than 2 hard disk at the same time(3) The power supply can improve the usb transmission speed.Features:1. 100% brand new and high quality2.Hot plug & play USB device3. Fully compatible with USB specification version 3.04.With blue LED for power5. ON/OFF switches activate or deactivate individual ports6.Designed with 4-port,7-port,this compact USB3.0 high-speed hub is small enough for travel,and cable enough to meet your connectivity needs7.Thespecification of the power supply is 3.5*1.35mm, 5V 2A.Specification:Item Name:USB HUB 3.0 / 2.0USB Ports:4,7Cable:USB 3.0 About 605mm,USB 2.0About 400mmSize:104*35*21mm,164*35*21mmData Transfer Rate:Upto 5Gbps/480mbpsColor:Black/WhiteCompatible: WindowsXP/Vista/7 and MAC OS 9.1 or higherPackage Include:1* USB high-speed hub