"The power supply runs extremely quiet, as does the whole setup. The blue LEDs are a bit on the bright side, and frosting the clear plastic lens would diffuse some of the intensity of the LEDs. I will probably end up just sanding them to take the "edge" off. There was an issue with the first power supply that was recieved where the data connections, primarily the USB, were leaking current. Ultra assured me that this was not normal and a sealed replacement unit was sent and tested out positive."