Keeping a good airflow through your chasey is an imperative, but is not easy task to be achieved. Cooler Master has a new, small, and very simple solution to this problem called PWM Fan hub.
As you all may know, motherboards have only one PWM header for the CPU fan. Cooler Masters Fan hub uses the signal from the PWM to regulate 5 other fans, depending on the load of the system. There is a possibility to manually fine tune speed of the fans if you are not satisfied with their noise, or cooling effect.
The difference between this fan hub, and the ones that are for 5,25 inch bays is obvious. It is smaller, less wires are used to control the fan rotational speed, and costs less.