Description 1.This item is One Universal 6V 2A 12W external switching power adapter. 2.Solve the problem of insufficient power supply mobile hard disk. 3.Wide input range, high precision voltage. 4.Power supply polarity: Inside positive outside negative,inside x(+) outside i(-). 5.Input : 100V-240V 50/60Hz 6.Output : for DC 6V 2A / 2000mA 12W 7.Cable length: 90 for cm 8.for DC Plug Dimension: 7.5cm * 3cm 9.for DC Plug polarity: Positive Inside, Negative Outside. 10.Plug:EU Plug