the rear panel of the device consists of an ac power connector and a power switch.

ac power connector this is a three-pronged connector that supports the power cord. plug in the female connector of the provided power cord into this connector, and the male into a power outlet. supported input voltages range from 100 ~ 240 vac at 50 ~ 60 hz.
power switch this turns the switch on and off. to turn on the system, press the switch to the "1" position; to turn off, press the switch to the "0" position.