Features       
1 upstream and 4 downstream USB port in cluded   
Fully complicant with USB specification version 2.0  
Hot plug&play USB Device     
Half-transparent design with Blue LED for Power             Specifications       
Interface:USB2.0,Compatible with USB1.1    
Data Transfer rate:1.5Mbps/12Mbps/up to 480Mbps   
Bus-Power Limit current protection:500mA