This USB 2.0 A Male to DC 5.5mm x 2.1mm power cable lets you draw 5V power from any standard USB port to run or charge compatible devices. The 5.5mm outer diameter and 2.1mm inner diameter barrel connector is one of the most common DC power jack sizes, making this cable a versatile solution for routers, LED strips, security cameras, small fans, and a wide range of consumer electronics.Built with a reliable USB Type-A connector on one end and a standard center-positive DC barrel plug on the other, this cable is ideal for home office setups, workbench power solutions, and anyone looking to simplify their power setup using an existing USB port or USB wall adapter.