Feature: 1. It can be powered by a power bank and 5V power supply, which is very convenient and practical. 2. After boosting, it is suitable for optical modems, wireless routers and other equipment. 3. DC3.5, standard DC port, mainly used for USB to DC, 5V to 9V 12V step‑up. 4. With digital display function, which can provide much convenience for your using and operating. 5. With compact shape, lightweight and portable, take up no space and you can put it anywhere. Specification: Item Type: USB to DC Booster Cable Material: ABS Color: BlackInterface Type: USB to DC Input Voltage and Current: 5V 1.5-3.5A Output Voltage and Current: 9V/2A 12V/1.5A Cable Length: Approx. 0.8m/2.6ft Package List: 1 x USB to DC Booster Cable 1 x Covereter Head Note: The input current must be greater than the output current (+1A).