Specification: Input Voltage: 5V Output Voltage: 9V / 12V Max. Output Current: 9V 2A, 12V 1.5A Interface Properties: USB to DC 5.5x2.1mm and 3.5x1.35mm Lead Length: approx. 0.8m Description: Step up 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. Can be used to power the router via power bank if power off, you can still enjoy the WIFI during power cuts. It 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. Package included: 1* USB Step-up Converter Cable 5V to 9V / 12V with 5.5x2.1mm DC jack 1* 3.5x1.35mm DC Convert adapter