It sounds technical, but it actually isn’t.

Let’s take a closer look.

What Is an SMC, and What Does It Do?

A MacBook with some keys highlighted.

Lucas Gouveia / How-To Geek

The SMC is a dedicated chip on Intel Macs that manages lots of low-level hardware functions.

It enables certain hardware features to work regardless of whether the Mac is powered on.

On Macs with Apple Silicon, there is no dedicated system management controller.

The key combination to reset the SMC on a MacBook with the T2 chip.

Hannah Stryker / How-To Geek

All the functions of the SMC are built into the main chip.

It just means there’s a far easier way to fix them: simply reboot your Mac.

The Apple Silicon equivalent of an SMC reset will happen automatically.

The key combination to reset the SMC on an older Intel MacBook

Hannah Stryker / How-To Geek

Shut down your Mac and press and hold the power button for 10 seconds.

Press and hold the following buttons:

Keep all these keys held down for seven seconds.

Finally, release all four keys, wait a few seconds, and then turn your Mac back on.

On desktop Macs with the T2 chip, it’s far simpler.

Just shut the Mac down and unplug the power cord.

Start by shutting down the Mac.

Finally, press the power button to turn on your Mac.

On desktop Macs without the T2 chip, the process is the same as for those with it.

Fortunately, there are other ways totroubleshoot your Macif the problems persist.