MulFan 4cm CeraDyna Fan 404010mm FD0540-A2212A FD0540-A3212A 5V 2Wire DaHua DVR Cooling Fan

hi guys this is a equation DVR but the pretty fun enough but as you can see the fun is noisy especially the Chinese cheap Chinese DVRs if there's a fun in it and they they're fun do you actually put a cheap phone is it just start making noise like this it's quite annoying when you if you laugh it's like if and the house if the DVR as a running under how to expand some quiet area like a life it is something and that makes quite annoying noise so how do we cut that noise so to make a piece of cry now I'll open the open the DVR as you see there the the fan as actually connect screw it onto the metal chassis so the fun rang warns when the found get ones and ones out and the grease Sapir sauna and I'd start vibrating and a vibration goes on the the metal chassis and makes a noise so well actually I've I've done a new solution for now so I've done a couple I got a new fun and so I I've done a