![When I was installing Windows on my 2015 MBP yesterday, I noticed that there was a light inside of the headphone jack. I never knew it had optical audio! You learn something When I was installing Windows on my 2015 MBP yesterday, I noticed that there was a light inside of the headphone jack. I never knew it had optical audio! You learn something](https://preview.redd.it/7n7gtwy5g4i71.jpg?width=640&crop=smart&auto=webp&s=228e74b6d3226af08deec37e2c80577c936b0e52)
When I was installing Windows on my 2015 MBP yesterday, I noticed that there was a light inside of the headphone jack. I never knew it had optical audio! You learn something
![Macbook Pro sound doesn't work via internal speaker, red Light coming from the headphone jack, Sound Icon Greyed out, How to solve - The DNetWorks Macbook Pro sound doesn't work via internal speaker, red Light coming from the headphone jack, Sound Icon Greyed out, How to solve - The DNetWorks](https://thednetworks.com/wp-content/uploads/2011/10/redlight-macbook-headphone-solution-no-sound2.png)
Macbook Pro sound doesn't work via internal speaker, red Light coming from the headphone jack, Sound Icon Greyed out, How to solve - The DNetWorks
![Macbook Pro sound doesn't work via internal speaker, red Light coming from the headphone jack, Sound Icon Greyed out, How to solve - The DNetWorks Macbook Pro sound doesn't work via internal speaker, red Light coming from the headphone jack, Sound Icon Greyed out, How to solve - The DNetWorks](https://thednetworks.com/wp-content/uploads/2011/10/redlight-macbook-headphone-solution-no-sound.jpeg)
Macbook Pro sound doesn't work via internal speaker, red Light coming from the headphone jack, Sound Icon Greyed out, How to solve - The DNetWorks
![Buy Gaming Headset with mic Wired Kids PC Headphone NEEDONE K19 Over ear Head set Noise Cancelling Microphone for Xbox One PS4 PS5 Nintendo Switch Lite Fortnite Computer Mac Laptop iPad Red Buy Gaming Headset with mic Wired Kids PC Headphone NEEDONE K19 Over ear Head set Noise Cancelling Microphone for Xbox One PS4 PS5 Nintendo Switch Lite Fortnite Computer Mac Laptop iPad Red](https://www.ubuy.com.tr/productimg/?image=aHR0cHM6Ly9tLm1lZGlhLWFtYXpvbi5jb20vaW1hZ2VzL0kvNzFnZmNiY0RiVkwuX0FDX1NMMTUwMF8uanBn.jpg)
Buy Gaming Headset with mic Wired Kids PC Headphone NEEDONE K19 Over ear Head set Noise Cancelling Microphone for Xbox One PS4 PS5 Nintendo Switch Lite Fortnite Computer Mac Laptop iPad Red
![My MacBook seems to be stuck in "Borg emulation mode" (red light) with no access to the built-in speakers - Disruptive Telephony My MacBook seems to be stuck in "Borg emulation mode" (red light) with no access to the built-in speakers - Disruptive Telephony](https://www.disruptivetelephony.com/200709290557.jpg)