This type of light is supposed to create a flashy rippling wave effect inside a computer case similar to the photo on the right. Indeed it did look like this for a short while. It lasted until I smelt a rather familiar, but unwelcome, smell of Magic Smoke™. And along with it burning plastic. Quickly pulling the plug it didn't actually catch fire, but wasn't far from it. It would appear that the transformer inside the inverter is shorting out causing it to overheat and spark.
With the light removed from my case, I removed the cover on the inverter to see what was going on inside. This is what I found :-
In my opinion this is a dangerous product. What would have happened if I had left my brand new PC unattended???
I'm not alone on this. There are several other forums and websites claiming that the inverter overheats and that the light creates large amounts of interference. I would not recommend this product to anyone and would instead recommend an Akasa cold cathode or led lighting kit instead.