How To Fix TP-Link TL-SX1008 Switch Fan Noise - RootUsers
this tells us it’s 12V, which was on the sticker anyway, but what I found interesting was that the “X” denotes “Super High” fan speed – lucky us. Otherwise it’s noted that it’s a 6,800 RPM fan with an air flow of 10.8 CFM at 28.5dB(A). ...