How to reset your System Management Controller on your MacBook If they are working, that's great! If not, you can escalate the issue by resetting the SMC. Once your Mac is loaded up, see if your USB-C ports are functioning. Press the power button again to turn on your Mac.Press and hold the power button for 10 seconds. Click the  Apple menu in the top left corner of your screen.

This won't cause you to lose any data or files it's just a way to reboot your Mac that's a little more useful than just restarting it. MacBook Pro introduced in 2018 or laterįirst things first, try doing a 'soft reset' of your MacBook.

MacBook Air introduced in 2018 or later.

How to troubleshoot dead USB-C ports on your MacBookīefore we get started, the steps below only work on MacBook models that have the Apple T2 security chips. If that doesn't work, you can escalate the issue and try resetting the System Management Controller (SMC), which controls the power, battery, fans, and a few other things on your MacBook. First, you can do a proper shutdown, which can help, sort of, 'shock' the Mac back into working correctly.

There are two different things you can do to troubleshoot dead USB-C ports on your MacBook.

Macbook air usb c not working