Description: Application: 1. When the standard USB input is 5V, the 5.5x2.1mm port output is 5V, when the QC3.0 USB input is 5.5x2.1mm output is 12V, your USB adapter must have QC 3.0 output, standard USB input, the output is 5V, can not increase to 12V. 2. With this cable, you can connect your power bank to the router. Thus, when the power is cut off, you can use your qc3.0 USB power bank to supply power to your router. 3. Use this cable, you can supply your car charger for air purifier LED strip with power from power bank 4. For 12V WiFi router, cat light, switch and other 12V devices (power less than 18W) Specifications: Input voltage: 12V QC3.0 USB charger Output voltage: for DC 12V Output current: 1.5A max Maximum output power: 18W max Cable length: Approx. 100cm Color: Black Input interface: standard USB 2.0 male Output interface: 5.5x2.1mm connector (Inside positive, outside negative) Quantity: 1 pc (other accessories demo in the picture is not included) Note: 1. Transition: 1cm=10mm=0.39inch 2. Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. 3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 X QC3.0 USB to DC 12V 5.5x2.1mm Han Step-Up Converter Adapter Cable