PSU controll configuration

hi i'd like to turn my printer on and off remotely, but maybe i didn't understand how psu controll GPIO works.
Do I have to physically connect some cables from the gpio of my raspberry?

could someone explain to me how this plugin works?

Thank you

The GPIO option of the PSU control plugin will require either a power supply that has a pin for turning it on/off, or you have to add relay that controls the power to it, which is then controlled by the GPIO pins.

Maybe it's better shelly ?

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