Scythe Kama Meter Fan Controller & Temperature Gauge
 

"Only the nerdiest among us use fan speed controllers and temperature probes, right? Well, that’s what I used to think - not anymore. I never tested out a multi-function controller that fits in the 5.25" bay because, well, I never really cared... However, my ideals have changed now, thanks to the Scythe Kama Meter." http://www.reviewdesk.com/kama-meter/