30W Reverse Polarity Universal AC Adapter Multi Voltage DC Power Supply, With

Reverse Polarity Power Adaptor: Most adapters only have single polarity, positive (+) or negative (-) polarity. This SoulBay AC Adapter owns Dual Polarity, reversible and changeable. 30Watt depends on the max output on 12V 2A and USB Port, 12V 2A + 5V 1.2A = 30W.

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