This is a DC/DC converter that converts 12V/24V power to 5V (maximum 3A). It has two USB-A female ports and can supply power to USB devices from batteries, cars, motorcycles, solar power, etc. Input: DC12V / 24V Output: 5V 3A (maximum value for both ports combined) Terminals: USB-A female x 2 Wiring: Red = IN+, Black = IN- (GND) Condition: Several available, unopened items will be shipped. Notes: Data communication is not possible as it is for power supply only. Avoid connecting devices that exceed a total of 3A, incorrect polarity, and outdoor use without waterproofing. It is recommended to install it in a way that does not completely seal it for heat dissipation. *【Important】This is a component that requires basic knowledge of electrical systems. Instant purchase OK. Will be carefully packaged and shipped. Search tags (for copy and paste) DC DC converter step-down buck 12V 24V 5V 3A USB dual 2-port car power supply motorcycle solar storage battery cigarette lighter alternative drive recorder router RaspberryPi mobile router LED power supply wiring repair parts