100% Brand New: Input: AC 110V/220V, 50/60Hz ; Output: DC 5V, Max 40A, 200W. The default output voltage is 5V DC, but it can be regulated by ±10%, from 4.5V to 5.5V. Two sets of output channels available. Works with device that draws no more than 40A, such as DC5V 1A~40A. Silent and Efficient: There is no fan inside the case, silent running. Porous metal shell makes heat dissipation more efficient. Compact small size, high efficiency, 5V stable output voltage protects your electronic products from destruction. (NOTE: 110V/220V must be selected by switch before use to avoid damage. 110V for USA/CA but 220V for EUR.) Multiple Safety Protections: All the power supplies are put through rigorous quality control procedures to ensure safe, reliable operation for years to come. Built in multiple safety protections, such as overload cut-off, over voltage cut-off, over temperature cut-off, short-circuit cut-off. Wide Application: Widely used to drive WS2812B WS2811 2835 5050 5V LED strip light, Wifi IP Home Camera, DVR NVR CCTV Security Camera System, Recorder, VoIP Phone Router, Home Phone System, Monitor, two-way radio, DC motor and other 5V devices no more than 150W.(Indoor use only!) What You Get:1x 5V 40A Switching Power Supply (Power cord is NOT included). 100% quality guarantee, worry-free shopping. 24-month warranty and friendly customer service. We are always stand behind our product. If there is any issue, please contact us, we will reply in 12 hours.