Adjustable Power Adapter 3V to 12V with Reverse Polarity

100% Brand new 100V-240V AC to DC Power Adapter supply
Input: 100-240VAC 0.3A 50/60Hz
Power: 30W Output volt: 3V 4.5V 5V 6V 7.5V 9V 12V (Manual adjustment)
Output Current: 2.5A Max, compatible with 500mA, 1A, 1.5A
USB Output: 5V==2.1A Max
the size of the two pin with the joint is different.
Plug Specification: US

Cable Length:115cm
Color:Black