12V 3A Power Supply: Input: AC 100~240V, 50/60Hz; Output: DC 12V 3A 36W(Max). Polarity: Center Positive (+). Ouput current is 3A max it means that it can supply with all amperage which smaller than 3000mA, such as 12v 3A 2A 1A 0.8A 0.5A 1000mA 900mA 800mA 700mA 600mA 500mA 400mA 300mA 200mA 100mA etc. Universal ac adatper comes with 10x DC Plugs: 5.5x2.1mm (compatible with5.5x2.5mm), 5.5x3.0mm+Pin, 5.0x2.5mm, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, terminal connector, which expands the application range of the adapter to a greater extent. Please reconfirm the DC jack size before purchase and use to ensure compatibility. 12V 3A power adapter would meet your 90% power need for 12V household and office electronics, like portable bluetooth, wireless receivers, electrical toys, WS2812B WS2811 LED strip lights, games consoles, kids 4 wheeler, GPS, DVR, webcam, speaker, CCTV camera, lan phones, USB Hubs, laptop cooler, external speaker, video baby monitor, min