1. Protection for charging equipment: 5V to DC9V/12VUSB power boost line has overcurrent and overvoltage protection, which can provide comprehensive protection for your equipment and prevent damage to your electronic equipment due to power. 2. Wide compatibility: Whether you are using a mobile phone, computer or other USB interface equipment, this power can be charged unhindered. It has the functions of 5V input and 9V/12V output and is suitable for most USB devices. 3. Easy plug-in and pull-out: The design of 5V to DC9V/12vUSB power boost line makes it easy to insert and pull out the equipment without additional tools or complicated steps, and it is convenient to plug and pull. 4. Small and portable: The power is small and light, easy to carry, and can be carried with you on business trips to meet power anytime, anywhere. 5. Efficient charging efficiency: 5V to DC9V/12V USB power boost line adopts advanced power, which can effectively convert power, improve charging efficiency, shorten charging time, ensure stable power output, and enable your equipment to charge quickly and safely.