ITEM NAME:DC-DC Converter Module 12V To 5V USB Output Power Adapter 3A 15W M& Specification: Input voltage: DC 12 V(12V To 5v) (Input Voltage must Higher 3V than Output Voltage) Output voltage: 5V Output Current: 3A Power :15w Conversion efficiency: 96% Package Includes: DC/DC Converter Module x 1.Output Current: 3A. DC/DC Converter Module x 1.