USB step up converter input voltage is DC 5V, output voltage is DC 9V or 12V, max output current is 1A (9V), 08A (12V).APPLICATION: the usb to 9v cable can be used to the router via bank if down. In addition, can also be applied to other device which is 5v supply, such as small fan, desk lamp, solar panel, USB pack, adapter etc.SWITCH & LED DISPLAY: 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.CONVENIENT USE: plug and play, you can still enjoy the WIFI during cuts; design with small dimension, is very convenient to carry out.Colour: blackMaterial: PVCSize: Length: about 60cmPackage Contents:1 * USB Step-up Converter1 * 35 x 135mm ConnectorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.