Universal USB (Universal Serial Bus) to DC Power Cable 5.5*2.1mm Adapter 5V Charging Wire For RC Model Monitor Tablet Description Model: USB (Universal Serial Bus) to DC Power Cable Material: All copper core Power: inside is positive, outside is negative Length: 0.7m Outer dia.: 3.0mm Connecotr: USB (Universal Serial Bus), DC 5.5*2.1mm Application: USB (Universal Serial Bus) LED, USB fan, cooler, monitor, USB HUB etc. Package Included 1 x USB (Universal Serial Bus) to DC 5.5*2.1mm Power Cable