Voltage Converter -USB Step-down Power Module Highlights Generic Brand USB Step-down Power Module Description: Input: 8 to 20V Output: 5V Current: 6A Max Power: 30W Size: Approx. 4.8 x 3.9 x 2.4cm / 1.9 x 1.53 x 0.95inch Main components: kim-055L package, tps40057 chip With high frequency low resistance electrolytic capacitors, withstand high voltage , to high stability The whole machine soldering With PCB doubling, Increase the width of the line to ensure the smooth running of the current With 4 USB ports, you can also use a standard USB device simultaneously. One of four USB interface reserving divider resistor for your DIY Purpose: All 5V equipment, below 30W of electrical equipment such as MP3, MP4, MP5, mobile phone, pad, GPS, automobile data recorder and bluetooth device, can be used at the same time or can be used LED power supply Warning 1: When using the positioning hole, the face of the circuit board is different, avoiding copper sheets to cause a short circuit. Warning 2: Unstable voltage on the car, must use wide input to ensure your valuable electrical safety. Must be at 8~20v wide input to use in car. This product can do that. Package includes: 1 x USB Step Down Power Module