5V 1A 5W max power supply certified by UL(The report reference id: E482416).Adapter Polarity: Center Positive(+),Outter Negative(-),Charger works for most of 5V electronic devices which requires less than 1A current such as DC 5 Volt 0.1A,0.2A,0.3A,0.4A,0.5A,0.6A,0.7A,0.8A,0.9A,1.0A. Charger works for most of 5V electronic devices which requires less than 1A current such as 5V 100mA,150mA,200mA,250mA,300mA,350mA,400mA,450mA,500mA,550mA,600mA,650mA,700mA,750mA,800mA,850mA,900mA,950mA,1000m Selected 10pcs various popular connectors which can be used for most of your 5V DC in devices, DC jack dimensions: 6.3*3.0mm, 5.5*2.5mm(Compatible with 5.5*2.1mm), 4.8*1.7mm, 4.0*1.7mm, 3.5*1.35mm, 3.0*1.1mm, 2.5*0.7mm, Micro USB, Mini USB, DIY connector