1,LED power driver< with wire > 2,Input Voltage:AC 180-250 V / 50 Hz 3,Power:equal or small than 5 w ... 4,Port have:4 port LED power driver< with wire >Input Voltage/ Frequency:AC 180-250 V / ... have:4 portOutput Voltage: 1v-20v It very useful: power saving,simple,small,cute,and favourable.you do not need ... for our LED lamp.It will be popular used in electric appliance . LED power driver