Lost your original power cord or traveling with multiple devices? With this adaptable universal power supply, you don't need to carry all the separate power cords. In fact, the days of searching for 3, 4.5 or 6 volt adapters for our different devices are over. One is enough.. Just choose the appropriate voltage.. In addition, different prompts allow you to connect any device. Universal transformer, 3-12V universal power adapter, current compatible with 300mA, 500mA, 800mA, 1000mA, output: 1.2A, maximum power 12W, compatible with 10W. 6 converter adapters: 2.5 x 2.5mm, 5.5 x 2.1mm, 4.0 x 1.7mm, 3.5 x 1.35mm, 3.0 x 1.0mm, 2.5 x 0.7mm, super suitable for your charging needs and your home. The polarity of the DC connector of this charger is positive (+) in the center and negative (-) on the outside, usually marked as: -(+ and the polarity of the connector cannot not be reversed. Interface during use. It can also extend the service life. The 12W replacement part comes with 6 different size