I just got a DM-PSU-8-PLUS and it cycles some very Louis fans every few minutes. I only have two Poe connections at the moment and it runs quiet than really loud then back to quiet.
I am not worried about warranty; anyone made one quiet? This is in my hall rack outside my bedroom amd will drive me nuts if I can¡¯t silence it (need it to be much quieter).
I found a YouTube video to do quiet fans in my Hikvision camera NVR and that worked great for that noisy beast.
