Kentek 3' USB 2.0 A Maschio a DC 5.5mm x 2.1mm Cavo Alimentazione Convertitore Ricarica
This USB type A to DC 5.5 mm x 2.1 mm barrel type power connector cable is used to power small 5 VDC devices that have a 5.5 mm x 2.1 mm barrel type power connector such as speakers using the USB port on your PC Mac computer.