Resetting the SMC on the new model iMac, iMac Pro, Mac mini and Mac Pro desktop Macs have a T2 security chip is a different procedure than on previous models of the same hardware.
SMC, which stands for System Management Controller, handles a variety of hardware features on the Mac, including power, fan operation, some ports and much more. Thus, SMC reset is a common troubleshooting technique when the hardware side of things does not work as expected on a Mac (along with NVRAM / PRAM reset).
This tutorial will walk you through how to reset SMC on your iMac Pro, iMac, Mac mini and Mac Pro, each with security chips. Unlike Mac laptops, SMCs on newer desktops are reset mainly with a power cord.
To be clear, this approach includes SMC reset for iMac from 2020 and later, all iMac Pro, Mac Pro 2019 and later, and Mac mini 2018 and newer. Previous models will use a different method.
To reset SMC on T2 iMac Pro, iMac, Mac Pro and Mac mini
Resetting SMC on newer security chip Macs is quite simple:
- Turn off the Mac
- Disconnect the power cord from the Mac
- Wait 15 seconds, and then reconnect the power cord to the Mac
- Wait another 5 seconds, then press the power button to turn on your Mac as usual
When the Mac is turned on again, the issue will hopefully be resolved, whether it was blasting fans for no apparent reason, weird power issues, unusual display behaviors such as flickering or not recognizing screens, port issues, or other issues.
If you continue to experience hardware issues with your Mac after resetting SMC, resetting PRAM / NVRAM is another good troubleshooting trick. You can also run the Apple Hardware Test on your Mac to diagnose any issues. And if all else fails, you may want to contact Apple for official support. Some users also recommend reinstalling the macOS system software, after performing a thorough backup of data of course.
Without a doubt, this approach may be easier than resetting SMC on other Mac models, including previous computers on both desktops and laptops. If you have ever reset a modem or network router, it is a similar experience for most people.
If you are troubleshooting multiple Macs, or if you are working on a Mac that does not have the security chip, you can read SMC reset instructions on any Mac here, where you can also read more about System Management Controller in general, or If the hardware are later laptops, specific instructions for MacBook Air and MacBook Pro for newer model years are here.
Resolving SMC Hardware Issues You Experienced with Your Newer Mac Desktop? Did you also reset PRAM on Mac? Let us know about your hardware issue and how you resolved it in the comments.