I have a Dahua NVR its fan started to be a bit more noisy than when it was new.
This is the fan:

I took a part other device which is new and I don't need it (satellite video transceiver) and it has similar spec fan:

The only difference I see is the Dahua have 2 cables and this has 3.
Should I try to swap them to see if the new one is quiet?
This is the fan:

I took a part other device which is new and I don't need it (satellite video transceiver) and it has similar spec fan:

The only difference I see is the Dahua have 2 cables and this has 3.
Should I try to swap them to see if the new one is quiet?