The USB2TYPEN1M USB to Type N (5.5mm) Power Cable enables you to power an external 5V DC device, using an available USB port on your desktop or laptop computer. The USB to DC Plug cable is a perfect solution for mobile applications, eliminating the need to pack a wall adapter for charging 5V devices. Eliminates having to carry/store a power adapter, by enabling you to connect devices from a USB port to a DC plug. Backed by StarTech.com lifetime warranty. Convert a USB A port into a type N power connector, for powering external drives or mobile peripherals through an available USB port on your desktop/laptop.