We have collected the most relevant information on Audio Over Displayport Hdmi. Open the URLs, which are collected below, and you will find all the info you are interested in.
no sound DisplayPort to HDMI cable - HP Hardware - Spiceworks
https://community.spiceworks.com/topic/2273039-no-sound-displayport-to-hdmi-cable#:~:text=While%20the%20DisplayPort%20spec%20allows%20for%20both%20audio,is.%20Was%20this%20post%20helpful%3F%20Spice%20Reply%20Habanero
No Sound with DisplayPort or HDMI Video Cable ... - Dell
https://www.dell.com/support/kbdoc/en-us/000125484/no-sound-with-displayport-or-hdmi-video-cable-connection
audio - Does DisplayPort carry sound as HDMI ... - Super User
https://superuser.com/questions/229084/does-displayport-carry-sound-as-hdmi-does
As others have mentioned, it's up to the manufacturer to support/implement audio over DisplayPort. Other research has indicated that the DisplayPort to HDMI adapter must also support audio. Odds are if you're using a laptop with a common video device like Intel or AMD, they implemented audio over the DisplayPort and you just need the drivers for it.
Amazon.com: displayport to hdmi with audio
https://www.amazon.com/displayport-hdmi-audio/s?k=displayport+to+hdmi+with+audio
Amazon.com: displayport to hdmi adapter with audio
https://www.amazon.com/displayport-hdmi-adapter-audio/s?k=displayport+to+hdmi+adapter+with+audio
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