Conclusion: To conclude, I like the innovative idea of the TDD-9000 with its “proven" claims and ability to cool your laptop in an eco-friendly manner. However, with the poor results I witnessed, this power-less technology isn’t going to win me over. However, results maybe very different with a bottom-fan mounted notebook. We do not have one available though and so cannot prove this. But for £14, it may be worth a try.