The USB step-up converter input voltage is DC 5V, output voltage is DC 9V or 12V, the maximum output current is 1A (9V), 0.8A (12V). APPLICATION: The USB to 9v cable can be used to power the router via the power bank when it is outage. Besides, can also be applied to other device which is 5v power supply, such as fan, desk lamp, solar panel, USB power bank, AC adapter, etc. SWITCH & LED DISPLAY: The step-up regulator is designed with a switch, you can choose the output 9v or 12v through it, and the LED display would show the output voltage value. CONVENIENT USE: Plug and play, you can still enjoy WIFI during power outages; Small size, very convenient to carry out. Color: Black Material: PVC Size: Length: about 60cm Package Contents: 4 * Converter 4 * 3.5 x 1.35mm USB Step-up Connector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement