Usage Tips:Features: brand and high quality USB A male Input: 5V; DC connector Output: 12V.(Note: Do not use the device for more than 12 watts. If you are using a large power supply this will not work.) DC jack: 5.5x2.1mm. 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, bluetooth-compatible headset, mini fan, LED light, and other 5V devices. Small size and easy to carry. Specifications: Material: Plastic Input 5V2A, 5.5x2.1mm output 12V1A, Input 5V3A, 5.5x2.1mm output 12V1.2A, Input 5V4A, 5.5x2.1mm output 12V1.5A, Color: Black Cable Length: approx. 100cm/39.97in Quantity: 1PC (other accessories in the picture is not included) Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x USB Voltage Step Up Cable