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The dual-ended PH2.0-4P female-to-female cable is engineered to streamline connections in modular electronics projects, particularly for Boson components and the UNIHIKER single-board computer. Featuring a foolproof keyed design to prevent reverse insertion, the 5cm-length cable ensures secure signal and power transmission between sensors, actuators, and control boards. With a 4-pin PH2.0 interface rated for 2A continuous current, it supports rapid prototyping in educational and industrial IoT scenarios.