... Size:245*425*235mm 4) 2 speed choices DC brushless fan 12V cpu cooler fan Features 1.1700RPM ... special blades angle design, a new generation of brushless DC motor, super strong wind, ultra quiet. 2.220V/ ... or 110V/60Hz power adaptor(commutate AC to DC,cable length:1.2m) for power supply,excellent ... for fan working, safe. 3.New generation of DC brushless technique, lower running voltage and current, power ...