The screen, resolution modes (Windows 10 Pro), and display settings buttons worked fine, but the built-in speakers played no sound from the line-in. I guessed it was only for OUTPUT for sound from an incoming HDMI signal, which I don't need (I can only use 1 other HDMI port on my motherboard, the other one has to be VGA). Cable and with HDMI. I really need a VGA monitor with built in speakers that works. :( I need to be able to get sound from a VGA + line-in cable! The sound quality from the built-in speakers (with HDMI) is tinny, hollow and fuzzy. I get better sound quality from my alarm clock! I assume so assume that the sound quality will be much, much better if you plug external speakers into the audio out jack and play them from there - actually now I understand why that jack actually exists, heh.
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