T420: Button in between "volume" and "ThinkVantage" -what does this do?
I can't figure out what the button in between "volume" and "ThinkVantage" on my T420 does. I've never seen the symbol before, it looks like a diagonal rectangle with a circle at the top. It has to be important if it got its own key, but nothing happens when you press it as far as I can tell. I feel like I'm asking Mr. Obvious from Bob and Tom...
This is what the key looks like.
Moderator Note: Edited subject to match content.
Solved!
Go to Solution.
It's the microphone mute button.
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