If there is one thing we can pretty much all agree on, it's that we like gadgets. Things that do something cool, or perhaps do something very normal but in a really cool way.We can also agree that excessive noise from your system is a real pain. Anyone who was in the PC business back in the days of 40mm and 60mm fans endlessly whining away will know exactly what I mean, as will those of you with actively cooled motherboards. Perhaps those of you with Deltas or similar 12v monsters are willing to wear ear defenders in the name of cfm, but for the rest of us this noise is bothersome.The move to 120mm fans was a huge help in reducing the amount of noise we have to tolerate, but as the fan sizes got larger, components got hotter, and cases became ever larger in an attempt to hold sufficient fans to get some good airflow over these hot parts.Instead of having one or two tiny fans producing lots of noise, we now have 5 or 6 large fans shifting air to keep the latest hardware cool. Really we're back at square one, just with much faster hardware and a much greater quantity of air being moved.This is all very well if you are one of the Delta brigade above, or have your system in a spare room and use headphones. But what if, like your faithful reviewer, you are someone with their PC in the lounge. Or perhaps your system is used as a total entertainment/office system rather than just gaming. You certainly don't want a bunch of fans going ten to the dozen when you're trying to balance your chequebook.Enter the NZXT Sentry 2 LXE fan controller. It absolutely covers the noise element as it enables 'on the fly' adjustment of fan speeds allowing you to turn it all down when you're browsing the internet and push them all back up for your gaming session. Perhaps more importantly it also covers the gadget aspect. A far cry from the "dial" based controllers we're used to, this is entirely touch-screen and external too. But before I get ahead of myself.