Yeeco DC to DC 8-35V to 5V Buck Voltage Converter Step Down Variable Voltage Regulator Power Control Board Car Power Supply Module 12V 24V to 5V USB Car Charging with Type A USB Female Port with Ear DC to DC buck converter step down USB car Charging Input voltage: DC8-35V Output voltage: DC 5V with identification resistor Output Current of the Step down power converter: 3A MAX Over-current, over-temperature protection, reverse polarity protection DC 12V 24V to 5V with USB female port and identification