Couldn't really find the appropriate list to put this under but thought this was as close as it got. Something we've noticed lately, and wanted to see if anyone else did as well, was when we've been installing High Sierra it seems like the microphone no longer works. This has happened on multiple computers and even on ones where we did not take out the board or touch it at all. Curious to know if this is a known/common issue and if so is there any resolve aside from an external microphone? Is there a new setting we have to adjust or whatever. We're really perplexed on this issue.