DC 5.0V/1000mA USB over-voltage and over-current protection. Plug number > 10000 times. Use of high-quality tin phosphor bronze high strength good elasticity deformation high electrical conductivity. USB protection door open can effectively protect the USB charging interface. Large charging current is 1000 ma make the output current more save charging time suitable for Table PC cellphones MP3 and other USB devices. Dual USB interface support different devices charging at the same time. Socket hole to protect door door design with double protection prevent unipolar inserted protect the security of the family