USB A male Input: 5v 2A; DC connector Output: 5v 0.7Amax. DC jack: 5.5 x 2.1 mm. Build in identigication resistor, Reverse polarity protection, over current protection, over temperature protection, short circuit protection. A smart design, Lower heat and long working time , for protecting your device from damage. This USB step up cable,PCB board is moulded by PVC which is hard to damage. For camera, router, stepper motor, desk lamp, speakers, blue tooth headset, mini fan, LED light, and other 5v devices. Small size and easy to carry.