Features Multi Channel Charging: The booster cable can be powered by a power bank and 5V power supply, which is very convenient and practical. Use: After boosting, it is suitable for optical modems, wireless routers and other equipment. Switch & LED Display : Our stepup regulator is designed with switch, you can choose the output DC 12V or 9V through it, and the LED display would tell the output voltage value. Convenient: With digital display function, which can provide much convenience for your using and operating. Application: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). Package List 1 x USB to DC Booster Cable 1 x Covereter Head