brand new and high quality This item is One for DC US 3V 1A Universal external switching power adapter. Solve the problem of insufficient power supply mobile hard disk. Wide input range, high precision voltage. Power supply polarity: Inside positive outside negative, inside x(+) outside i(-). Input voltage: AC 100V ~ 240V Output voltage: for DC 3V 1A for DC Plus Dimension: 5.5mm*2.1mm Plug: US Output voltage accuracy: 5% (no load) Output current: Maximum 1A Cable length:1m/3.28ft This Adapter is suitable for 3V 1A Electric motor, Mini TV, Mobile Hard disk, Mobile DVD, charging equipment, MP3/MP4, desk lamp, Router, switch, game console, Camera, LED Strip, OVED, Laptop PC and two way radio Quantity:1Pc Note: Please make sure the for DC output and tip size of ac adapter are accordant before you bid Due to the difference between different monitors, the picture may not reflect the actual colorof the item. Thank you