Summary: I purchased this because I have a Sony Vaio laptop that gets extremely hot very quickly. This unit with it's 230mm fan runs extremely quiet and I have not had a heat related issue since I started using this. I recommend them very highly to my customers for their laptops as well.
Summary: The initial product I received was defective and caused my system to power down, but crib death happens. They replaced it easily and the next one has worked well. It is quiet and draws air well. It has brought my core temps down from the low to mid 60C to an acceptable 50C. It has allowed me to keep working safely!
Summary: It does what it is supposed to and by that I mean it spins. It keeps the outside of my laptop cool but according to Coretemp it does nothing for the inside components when running. I'm not sure any of these fans that work from the outside can really do anything except when your inner fan kicks in to help it. If your looking to cool the outside off for what that's worth this fan will do it.
Summary: I've owned a number of laptop coolers over the years including Thermal take product, which is now 3 years old and still works fine. This cooler I purchased as a present for my friend and so far it has been great. Great design that actually works.