... -250 V / 50 Hz 3,Power:equal or small than 5 w 4,Port have:4 port LED power driver< with wire >Input Voltage ... :equal or small than 5 wPort have:4 portOutput Voltage: 1v-20v It very useful: power saving,simple,small,cute,and favourable ... if you use this kind of power supply,and it have 1 meter long wire,4 ports.it designed for our LED ...