I bought 2 of these over the summer for distance learning - I have 2 similarly aged kids who are on video calls for school 3 hours a day, usually simultaneously.  The headphone jacks are defective - they rarely, and only intermittently, recognize when headphones are plugged in.  Sometimes restarting the whole system will help, but not always.  I've tried 3 sets, so it's obviously a hardware issue.  I suspect it's a build defect, not a QC issue, since it's happening on both machines.  Even when we need to use the external speakers, those are terrible, too - my kid can barely hear his teacher even hovered over the keyboard with the volume turned up to 100.  What a total waste of money.