USB-C cables will have some limited Thunderbolt compatibility, and transfer speeds may even exceed those of USB 3.1. USB is fully backwards compatible, and you can even use USB-C with the traditional USB-A connector if you buy an adapter. The thicker (5A) cables will carry a higher voltage and allow you to charge more power-hungry devices. Your Mac may try connecting to a Bluetooth device that isn’t in range.USB-C cables come in a variety of speeds and configurations. Terminate the process by clicking on the “X,” and it will restart automatically.

Restart your sound controller by opening the “Activity Monitor” and locating “coreaudiod” in the process list.If you want the sound to play through your headphones or speakers while your TV is on, you need to switch to your speakers by clicking on the audio icon found in the Mac menu bar.If your TV is connected via HDMI, for example, your sound is probably being redirected to the TV instead of the headphones or speakers. Other devices could be channeling the sound away from your headphones. That includes HDMI, Thunderbolt, and USB devices.

Check all of the ports by disconnecting everything plugged into your Mac.

Some models have built-in volume controls that can be turned down or turned off.

Check the volume controls on your headphones.

Plug the headphones back in while holding the volume buttons at the same time.

Try blowing the dust off the jack and from inside the port on your Mac to see if that solves the problem. Dust or fluff is enough to block the port from recognizing your headphones or speakers. Unplug your headphones and try connecting them to another device like your iPhone or iPad to make sure they are working as intended.If your headphones or external speakers don’t work when you connect them to your Mac computer, here are some things you should try to fix the issue: Headphones Not Working on Mac: 13 Things You Can Do Let’s take a look at what to do when your headphones aren’t working on your Mac. Fortunately, there are several solutions you can try to fix this audio bug.

2014 macbook air usb c earphones