Thanks Amazon delivered again very quickly, the part bought for my notebook 18.4 inches, it has a sophisticated and fits very well with the size .The fans were very quick to assemble man can accuratly as Mount where it is out müssen.Die cooling effect very good, and the sounds are very low also, it can be written by the end slope of the notebook was very good and work, I'm with the Cooler Master U3 hundred percent satisfied.