Sooo..., I noticed this thing, that being a family man required me to turn on the PC late when everyone's asleep. And not to wake up anyone I removed the small speaker that was connected to the MB, so that there won't be any "BEEP" when powering on. I remember a time when PC cases came with this fairly sizeable speaker at the bottom of the case. Time long gone now. Long story short, do you still have that speaker in your case ? Haven't seen any mod with a speaker for sure.