USB Boost Cable 5V Step Up to 9V 12V Adjustable Voltage Converter 1A Step-up Volt Transformer DC Power Regulator with Switch Product parameter 1. Input voltage: 5V 2. Output voltage: 9V 12V 3. Output current: 9V 1A 12V 0.8A 4. Interface attribute: USB hole is converted to DC round hole 5. Cable length: 0.8 meters 6. Weight: 35 grams Features 1. If the power is off, the converter can be used to power the router through the 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 packs, power adapters, etc. 2. Switch and LED display: The boost regulator is designed with a switch, you can choose to output 9v or 12V through it, and the LED display will tell the output voltage value. 3. Convenient to use: plug and play, you can enjoy WIFI when the power is off; the design is small in size and very convenient to carry. The package includes: USB boost converter 1 x 3.5 x 1.35mm connector