Bought to replace the original fan NAS D-Link DNS-320L much too noisy. You just reverse polarity on pin 3 basic poles and the NAS has just saved his presence at home. Very quiet, this model also has the advantage of being shipped with many accessories and adapters to deal with all situations in a high-end box. So, the price / quality ratio is excellent.
To reverse polarity DNS-320L, is to identify colors and bring out the 2 pins to reverse using a small screwdriver.
