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This 2-pack USB to DC 4.0mm x 1.7mm power cable delivers reliable 5V 3A stable power supply for daily small electronic devices. Built with solid connector and durable outer insulation, it ensures safe current transmission and long bending lifespan. Compact 3FT length meets routine layout demands without redundant cable clutter. Simple plug-and-play design, perfectly suitable for powering LED lights, USB fans, mini speakers and more 5V DC barrel jack devices.