The product looks visually very good and also makes what it is. The fan can be mounted very easily and where you want. It would be a waste if a defend firmly attached right under the battery, or second hard drive. So the fans are right under the problem areas. The fans are not particularly strong but adequate. My laptop now overheat no longer in play. The controller is very practical, but unfortunately you can turn on this fan not quite. That weirs Practical pull the plug as if you should not need the additional cooling. The volume of the fan corresponds to the internal fan of my laptop and therefore not interfere.