Review on 🌀 Coolerguys Ultra-Thin 25mm (25x25x10) USB Fan by James Mayberry

The noise level was a bit higher than I thought but they are still pretty quiet. I attached one to a very thin piece of wood behind the case, it resonates a bit, you can hear it but it's not annoying or anything. I bought two of these fans and they work great together to cool a large Sony receiver that is fully enclosed in a TV cabinet. But there is no ventilation. These fans did their job to prevent the device from shutting down due to overheating. That got pretty annoying.