Follow these simple steps to reset the NVRAM Sometimes resetting the PRAM or NVRAM can fix the USB ports not working on Mac issue simply because the NVRAM holds the data about the keyboards, trackpad, mouse and USB components. Step 3: Release the keys and then turn on the Mac.When the power adapter blinks or changes color the SMC reset will be complete. Step 2: Hold down the Shift, Control, Option and Power buttons at the same time for a few seconds.Step 1: Shut down the Mac and then connect it to the power cable.Here's how to do it for a MacBook, MacBook Pro and a MacBook Air The process is slightly different for different Mac models. If you are certain the problem is not the USB device or the cable, the easiest way to fix the USB not working on Mac problem is to reset SMC. Dust and debris can be easily removed like we mentioned in the first solution above, and you can also try using different USB devices to see if they are the problem. Just to make sure that it is not a hardware problem, you may want to check that the USB port on the Mac is working fine. Step 3: Confirm that you want to restart the Mac by clicking on the "Restart" button in the menu that appears.Step 1: Click on the menu button located at the top left corner of the screen.Follow these simple steps to restart the Mac In this case, you may want to restart the Mac to eliminate any software issues that could be causing problems. This problem can also be caused by a software issue. If there are, use a soft cloth to clean out the dust or a toothpick to remove any debris. You may also want to check the USB ports on the Mac to make sure there isn't any debris or dust lodged in it. If the program recognizes a different USB device, the problem is not the Mac you just need to change the USB device you are using. To check if this is a connection issue and that the USB you are using is damaged or not, try connecting a different USB device to the Mac to see if it's recognized. Like we mentioned above, it is likely that the Mac is not the problem at all but the USB itself is failing to connect to the Mac. But before you think that the problem is the Mac, consider that sometimes USB devices can fail. You know you didn't do anything to cause the problem, but all of a sudden all your USB ports not working on Mac. Apple Cannot Check It for Malicious SoftwareĪs flawless as a Mac can be, it is not completely immune to issues and sometimes the USB ports on the Mac can stop working inexplicably.Software Update Is Required to Connect to Your iPhone Error.Fix Backup and Sync Has Encountered a Fatal Error.Change The Login Screen Wallpaper in Catalina.
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