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Mini DisplayPort - Wikipedia
https://en.wikipedia.org/wiki/Mini_DisplayPort#:~:text=While%20the%20DisplayPort%20specification%20can%20support%20digital%20audio%2C,USB%2C%20Firewire%2C%20or%20the%20audio%20line%20out%20port.
Does the Mini DisplayPort support audio? - Apple Community
https://discussions.apple.com/thread/2766537
Level 1. Question: Q: Question: Q: Does the Mini DisplayPort support audio? I have a 13-inch MacBook Air running 10.5.8. I want to buy an adapter for the Mini DisplayPort to hook it up to an HDMI cable so that I can stream videos, etc. to my TV. Assuming I buy an adapter that supports audio, does the Mini DisplayPort on this model support audio ...
About the Apple Mini DisplayPort adapters - Apple Support
https://support.apple.com/en-us/HT204149
The Apple Mini DisplayPort to VGA Adapter connects a Mac that has a Mini DisplayPort , Thunderbolt port , or Thunderbolt 2 port to display that uses a VGA cable. This adapter supports display resolutions up to 1920 x 1200. To achieve resolutions greater than 1600 x 1200, displays with high refresh rates might require that you lower the refresh rate.
Identify the ports on your Mac - Apple Support
https://support.apple.com/en-us/HT201736
Thunderbolt and Thunderbolt 2 are not the same as Mini DisplayPort. They have the same shape, but use different symbols on the cable and port. However, this port does support Mini DisplayPort for video output, so you can use a Mini DisplayPort cable to connect a Mini DisplayPort display.
Does this Mini DisplayPort to HDMI connector output audio?
https://apple.stackexchange.com/questions/33620/does-this-mini-displayport-to-hdmi-connector-output-audio
Only certain Macs can output audio through the mini display port. Those that can't will need to have auxiliary speakers connected to the 3.5mm audio jack or other solution through a separate cable system. Mid 2010 or later MacBook Pros support audio through the port. Late 2009 or later iMacs also support it.
Amazon.com: mini displayport to hdmi with audio
https://www.amazon.com/mini-displayport-hdmi-audio/s?k=mini+displayport+to+hdmi+with+audio
Monoprice Mini DisplayPort/Thunderbolt to HDMI …
https://www.amazon.com/Monoprice-DisplayPort-Thunderbolt-Adapter-Support/dp/B0025V2VO0
Compatible with Mac laptops that use a Mini DisplayPort port for video output Some source devices allows audio output through the Mini DisplayPort Five-inch cable length (13 centimeters) New (9) from $10.99 FREE Shipping on orders over $25.00 shipped by Amazon. There is a newer model of this item: Monoprice Adapter HDMI Cable, Black (112742) $9.99
Apple's Half-Baked Support for DisplayPort
https://lowendmac.com/ed/fox/09ff/displayport-audio.html
But it didn't make sense that Apple wouldn't use the audio portion of the DisplayPort specification (which supports up to 8 channels) to handle sound. I was mystified by this news. To double-check, I searched for detailed reviews of the LED Cinema Display.
Mini DisplayPort audio capability? - Microsoft Community
https://answers.microsoft.com/en-us/windows/forum/all/mini-displayport-audio-capability/89394a5c-474a-4fcd-9726-8af88326829a
There are three components needed to enable Display Port audio: A graphics output device (PC or laptop) that supports Display Port audio and/or dual mode with audio. A Sink device (display) that supports audio playback. For example, a Display Port monitor with speakers or a television with HDMI input if using dual mode.
OWC Mini DisplayPort to HDMI 4K Video and Audio Adapter
https://eshop.macsales.com/item/OWC/ADPMDPHDMI/
The Mini DisplayPort to HDMI Adapter offers true output flexibility. You can output video from all your Mini DisplayPort equipped Macs, PCs or docking stations via one cable to a high definition monitor or TV with up to 4k @ 30Hz. You can output BOTH digital audio 1 and video for a true one cable solution for all your A/V needs.
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