
So, if one or more of your ports aren't working, resetting the SMC will hopefully rectify the problem.

The SMC is responsible for a few different aspects of your MacBook or MacBook Pro, but most importantly, it's in charge of how the power in your MacBook is distributed, including to the USB-C ports.
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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.
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Once your Mac is loaded up, see if your USB-C ports are functioning.

Luckily, I found a solution that seemed to remedy the problem. I was worried I was going to have to send my MacBook Air away to get fixed. I've dealt with this exact problem before, and it apparently can happen to even the best MacBook. If you're experiencing a problem where one or more USB-C ports appear to stop working like there's no power going to them and you can't connect anything, you might be feeling a bit a little frustrated. This becomes even more important if you're using a USB-C hub so you can connect other peripherals and accessories to your Mac. The USB-C ports on the MacBook Air and MacBook Pro are vital ports, and you need them to work for you at all times.
