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MacBook Type C Port Not Working - Solutions and Repairs

repair macbook usb
macbook usb repair

The USB-C ports on your MacBook are versatile and essential for various tasks, from charging to data transfer. However, when these ports stop working, it can disrupt your workflow. In this comprehensive guide, we'll explore common reasons why your MacBook's USB-C port might not be functioning and provide practical solutions to resolve the issue. If these troubleshooting steps don't work, Mac.Infinity is here to help with expert repair and service. Let's dive into the details. Quick Solutions: Before delving into the potential causes of a non-functional USB-C port, try these quick solutions to see if they resolve the issue:

  1. Ensure you're running the latest version of macOS.

  2. Reboot your MacBook.

  3. Run an Apple Diagnostics test to identify software or hardware-related errors.

Possible Reason #1:

SMC Needs A Reset: The System Management Controller (SMC) is responsible for managing power-related functions, including USB-C port functionality. If your MacBook's USB-C ports aren't working, an SMC reset might help. Follow these steps for both Intel-based and Apple Silicon Macs to reset the SMC: For Intel-based Macs:

  1. Press and hold the Control, Option, and Shift buttons simultaneously.

  2. After seven seconds, press and hold the power button too.

  3. Keep holding the keys for another seven seconds.

  4. Wait ten seconds and press the power button to turn on your MacBook.

For Apple Silicon Macs:

  1. Shut down your Mac.

  2. Hold the power button for at least 10 seconds, then release it.

  3. Wait a few seconds and press the power button again to turn on your Mac.

Possible Reason #2:

Dead External Drive: If your USB-C port is not working, it might be due to a faulty external drive. To diagnose this, try connecting a different device to the USB-C port. If it works, the issue likely lies with the external drive. Additionally, you can follow these steps:

  1. Click the Apple icon in the Menu bar.

  2. While holding the Option key, click System Information.

  3. Under Hardware, open the USB section to check for the external drive's presence.

Possible Reason #3:

Debris or Damage: Dust or debris can accumulate in the USB-C port, causing connectivity issues. Use a flashlight to inspect the port and blow out any visible debris using compressed air. Ensure your MacBook is powered off before attempting this.

Possible Reason #4:

Compatibility and Cable Check: Ensure that the cable or adapter you're using is compatible with your MacBook. Sometimes, using a different cable or adapter can resolve the issue. Check for visible damage on the cable as well.

Possible Reason #5:

Restart and Apple Diagnostics: A simple reboot can reset internal software parameters, potentially fixing the port issue. If the problem persists, run Apple Diagnostics to identify any problems with your USB-C port. The steps differ for Intel-based and Apple Silicon Macs.


A non-working USB-C port on your MacBook can be frustrating, but many issues can be resolved with these troubleshooting steps. If you've tried the solutions above and your USB-C port still isn't functioning, it's time to seek professional help. At Mac.Infinity, we specialize in diagnosing and repairing MacBook issues. Contact us or just walk-in to service center at Funan Mall #03-24 and ensure your MacBook is back to its optimal performance.

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