Specification: Origin: Mainland China Model Number: USB Step-up Converter Color: Black Input voltage: 5V Output voltage: 9V/12V Maximum output current: 9V 2A, 12V 1.5A Interface attribute: USB hole to DC round hole Purpose: Router, optical modem, charging lamp, charging fan Accessories: with 3.5-1.35 adapter Note: The input current should be greater than the output current (+1A) Line length: about 0.8m/2.62ft Size: 67x25x16mm/2.64x0.98x0.63in Weight: 30g Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 X USB Boost Converter 1 X 3.5x1.35mm Connector 1. USB boost converter: The input voltage is DC 5V, the output voltage is DC 12V/9V, and the maximum output current is 0.8A (12V) 1A (9V) or 1A (9V). 2. Application: In case of power failure, you can use USB to DC12V/9V cable to power the router through mobile power supply. In addition, it can also be applied to other 5V power devices, such as small fans, desk lamps, solar panels, USB power boxes, power adapters, speakers requiring 12V/9V Power, and Bluetooth-compatible audio. 3. Switch&LED display: Our booster regulator is equipped with a switch, through which you can choose to output 12V or 9V DC, and the LED display screen will display the output voltage value. 4. Easy to use: Plug and play, you can still enjoy WIFI when power is off; With 1 to 2 adapter, two routers with the same voltage can be powered at the same time. Compact design, easy to carry.