I have a 16 Channel NVR (NVR-ELE16C-P4K), and I'm looking to upgrading the fan on the side (not the motherboard CPU fan) as it's a little loud. The size appears to be a 60 x 60 x 10 mm.  If I wanted to upgrade this with similar specs (size, volt, watt, etc), is there anything to note?  I know it's a 2-pin, but if the new fan stops working, does the NVR have an auto-shutoff or alert feature if it gets too hot that you need a specific fan to do this?

Also I'm thinking of upgrading the power supply for the same reason (too noisy).

I just wanted to check for anything to note that I'm not thinking about.