Wentronic 93632 fan power adapter cable (4-pin to 3-pin 12V 2x and 2x 3-pin 5V) white (accessory)
As described in the other reviews the adapter complies exactly what he intended. However, in my copy right indication, as it is in many other reviews that White and Black = 5V = 12V, NOT! In my copy it's the other way, namely: White = 12V Black = 5V