The XILENCE fan to replace the original fan my Zyxel NSA325, as in various forums its living room suitability has been touted in glowing terms. But Nope, the fan is even louder than the original built. In 2 different vendors I ordered. A fan was characterized by vocal grinding noises and persistent chirping. The second was "inspire", was merely chirped in. Disappointing! Also 7V- and 5V adapter have not particularly helped, because you quickly ended in temperature-critical regions. The next attempt will lead me to the Pope 612FL. I hope that the 5 times higher price worthwhile.
Positive I can not report on the XILENCE fan. For me a smoother letdown and - at least for the NSA325 - useless.
