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This 5521 DC power extension cable adopts 5.5mm x 2.1mm male to female interface, easily extends the original DC power cord length. Built with premium 22AWG copper wire, it ensures stable voltage and current output with low loss and strong load-bearing capacity. The solid connector provides tight plug connection, no loose power or intermittent dropout. Comes with 2 pieces in one pack, lightweight and flexible, perfectly suitable for 12V routers, surveillance cameras, LED lights, projectors, solar power systems and more DC powered devices.