Most helpful positive review
73 of 74 people found the following review helpful
Works perfect on Macbook Air, including sound, but must go into the System Preferences first. Also works on Lenovo x230 !
on June 19, 2012
Sound didn't work on my Macbook Air (early 2012 model) on the first try, but going into the System Preferences -> Sound -> Output you can select the output device.
Assuming the adapter is connected to a TV and you can see the computer's picture on the screen, when you go into the System Preferences, the Sound Output device selection will show "Internal Speakers" as well as the TV's name. Just select the TV and the sound will start to come out of it.
It's a one time setting; I disconnected the adapter and the sound came back to the internal speakers, but when I reconnected it came out the TV again without me having to revisit the settings. You only need to revisit the settings when you connect to different TVs.
UPDATE: I recently tried this adapter on the MiniDisplayPort of a Lenovo X230 laptop running Windows 7 and it works there too, perfectly with sound as well!