Have you lost your original power cable or are you travelling with several devices? No need to carry all your individual power cables with this adaptable universal power supply. In fact, no more time spent looking for your adapter for 3, 4.5 or 6 Volts for our different devices. Just one is enough.. Just select the right Voltage.. Plus different tips allow you to connect any Device. Universal Transformer, The current of the universal 3-12V power adapter is compatible with 300mA 500mA 800mA 1000mA, Output: 1.2A Max ..12W power, compatible with 10W. 6 converter adapters: 2.5 * 2.5mm, 5.5 * 2.1mm, 4.0 * 1.7mm, 3.5 * 1.35mm, 3.0 * 1.0mm, 2.5 * 0.7mm, super suitable for your charging need as well Home. The polarity of the DC connector of this charger is Center Positive (+) and Outer Negative (-), usually marked as: - (+ and the polarity of the connectors CANNOT be reversed. the interface during use.It can also extend the service life. 12W replacement comes with 6pcs connectors of different