SpeciFIcation:
Model  GU3031A(4-PORT)  
Input Interface  USB3.0 B typemaleport  
Output Interface  4-Port USB3.0HUB  
Led Indication  Red(Power)   Green(working)  
OperatingEnvironment  Working:0-50oC.  Storage:-20-70oC  
System Requirement  Windows Xp/Vista/7/8, Mac OS,Linux  
Dimension  76.6*42*11(mm);140mm(cable)  
Weight  15g  
Marerial  PC

Features:
1. LED indicator for power status and USB working status
2. Multiple USB 3.0 interface supports plug and play,hot-swap, easy to use and carry
3. Support over current and instant current protection, protect the connected devices and hub itself
4. Support USB 3.0 super speed(5Gbps) transmission, downward compatible USB 2.0/1.1
5. Drive free,supports windows xp/ vista/7/8 and Mac OS, linux
6. Independent power supply provides stable power supply to connected devices