Your Mac Studio is packed with advanced technologies. If you’re not sure which Mac Studio you have, see the Apple Support article Connect a display to Mac Studio.
3.5 mm headphone jack: Plug in stereo headphones or external speakers to listen to your favorite music or movies. Use high-impedance headphones without a digital-to-analog converter or an amplifier.
Power button: Press to turn on your Mac Studio. (To turn Mac Studio off, choose Apple menu > Sleep to put it to sleep.)