SoulBay 30W Universal AC/DC Adapter Reverse Polarity Power Supply with 9pcs Adaptor Tips for 3V 4.5V 5V 6V 7.5V 9V 12V Household Electronics One USB Port 2Amp Output Max

Reverse Polarity:You can select which polarity you want! This SoulBay 30W AC Adapter allows for use across multiple devices, multiple DC voltages, and multiple connector types. Comes with protection of over voltages, over current, short circuits and over temperature, more safety! Specifications: AC Input: 100V-240V 50/60Hz DC Output: 3V 4.5V 5V 6V 7.5V 9V 12V Adapter tips specifications: 5.5*2.5mm, 5.5*2.1mm, 5.5*1.5mm, 5.0*2.1mm, 4.0*1.7mm, 3.5*1.35mm, 3.5mm mono, 2.5mm mono, female USB plug. Instructions: 1. Connect the correct adapter plug Select a suitable plug and then insert into the DC cable end, make sure it's firmly attached to the power port of your device. 2. Set the right DC output voltage There are 7 Volts options. (use the little key to choose the right voltage. If the required voltage is not in the options, please choose the closest one. eg, if your device needs 5.5V, you can choose 5V or 6V) 3. Connect the adapter to the electrical socket, ready to power your device! Note: 1.Please check the device polarity carefully, and choose the correct polarity setting! 2.Not for Over 12V electronics, for example, if you device required 19V DC, it’s incompatible! FAQ: 1. How Can I Change and Confirm the Polarity? Answer: Check the polarity symbol near the device specification sticker or power port. Our adapter cord end and tips have the polarity symbol, the same symbol connection is the correct polarity setting. 2. What’s the working Voltage and Amps range? Answer: We name this power adapter 30W. 30Watt depends on the max output on 12V, 30W = 12V * 2amps + USB 5V 1.2A. 2000mA is the max current output on each Voltage setting, not for device requires 2.5A or more. 3. What's the function of the KEY? Answer: To adjust the voltage knob and choose the suitable Volt setting.