Specifications:_x000D_
4 ports USB 2.0 hubs with USB power adapter _x000D_
Charge and connect any USB Device _x000D_
The most high supply electric current energy achieves 500mA _x000D_
Has the overflow protection circuit, using the most advanced Poly the Switch protection, to prevent the wrong operation from damaging equipment. _x000D_
Powered by computer USB ports or USB power adapter _x000D_
5 cm USB 2.0 cable included_x000D_
USB high speed mode compatible,per second 480MBPS_x000D_
USB Version 2.0 specification