Features:USB step up converter input voltage is DC 5V, output voltage is DC 9V or 12V, max output current is 1A (9V), 0.8A (12V). Safe & Reliable, with built-in upgraded intelligent IC circuit, our voltage adapter provides your devices perfect protecetion from over-current, over voltage, overload or short circuit. The usb to 9v cable can be used to power the router via power bank if power down. In addition, can also be applied to other device which is 5v power supply, such as small fan, desk lamp, solar panel, USB power pack, power adapter etc. Our stepup regulator is designed with switch, you can choose the output 9v or 12v through it, and the LED display would tell the output voltage value. Plug and play, you can still enjoy the WIFI during power cuts; design with small dimension, is very convenient to carry out. Package Includes:1PC x USB Power Boost Line Specifications:Input Voltage: 5VOutput Voltage: 9V / 12VOutput Current: 1A max (9V), 0.8A max (12V)Interface Properties: USB hole convert to DC round holeLine Length: 0.8 mWeight: 35 g 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