I've got a Mi Box 4K recently. I'm not sure how do I shutdown or power it off. There's a power button on the Mi Remote. From what I read on the internet, it puts the device to sleep. Long pressing the power buttons brings up Restart and Screenshot options only.
Currently, I press the power button on the remote, once the screen goes black, I turn off the adapter plug. Is this the only and correct way to power off this device? I can't keep the device plugged in all the time when not in use.
Yep.