The USB2TYPEH 3-foot USB (Universal Serial Bus) to Coaxial Barrel Plug cable enables you to power an external 5V DC device using an available USB (Universal Serial Bus) port. The USB (Universal Serial Bus) to Coax Barrel Plug cable is a perfect solution for mobile applications, eliminating the need to pack a wall adapter for charging 5V devices. The Star Tech.com Advantage Turn a USB (Universal Serial Bus)-A port into a power port to power external drives or other peripherals Perfect for use on the road with a laptop, providing a way to charge mobile devices anywhere you go Backed by Star Tech.com lifetime warranty