The USB2TYPEM2M USB to Type M (5.5mm) Barrel cable enables you to power an external 5V DC device through an available USB port on your desktop or laptop computer. The USB to DC Plug cable offers the perfect solution for mobile applications, eliminating the need to carry/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. 2-meter cable length overcomes distance restrictions while powering 5V DC devices from an available USB port, enabling more versatile device positioning. Backed by StarTech.com lifetime warranty, ensuring long-term reliability and performance. Convert a USB A port into a type M power connector, for powering external drives or mobile peripherals through an available USB port on your desktop/laptop