In this article, we'll explain how to turn on your Mac with the power button, and what to do if that doesn't work.
Turning on an Apple computer | Michael Jr.
As long as your Mac is plugged in, you should be able to turn it on by simply pressing the power button. However, that power button is in a slightly different place depending on which Mac you’re trying to turn on.
To turn on a Mac Studio, press the power button on the back left (coming from the front), next to the 3.5mm headphone jack. It’s a round button with a power symbol on it.
The power button for the Mac mini is located on the back right side (from the front) next to the power cable port. It is a color-coded button with a white power symbol on it.