OCModShop checked out the NZXT Sentry LX Fan Controller
A quote from the article:
>> NZXT Sentry LX Fan Controller Review
A couple of decent fans to push the air through is more than sufficient on most systems. Some of us, however, require much more to keep things cool while we put our computers through the gauntlet. The only problem is that many motherboards only have one or two places to plug your typical 3-prong fan. Three at most. And then you are limited to a single speed or whatever the motherboard decides is best. YOU control the computer, not the other way around. That's where the NZXT Sentry LX comes in. Time to show your computer who the biatch really is.
>> NZXT Sentry LX Fan Controller Review