outtag 15w universal ac adapter 3v 4.5v 5v 6v 7.5v 9v 12v multi voltage switching power supply replacement w/multi-tips for 3-12v household electronics routers cctv ip cameras smartphone speakers outtag 8 different connectors attached:3.0x1.0mm, 2.5x0.7mm, 4.8x1.7mm, 3.5x1.35mm, 5.5x2.5mm, 5.5x2.1mm, 4.0x1.7mm, micro usb.<br>polarity center positive design,and could not be reversed<br><br>charger step:<br> 1: use the key to switch the voltage arrowhead to the right voltage;<br> 2: power on your device.<br><br>