The Sunbeamtech Rheosmart 6
The fan controller uses only one 5.25” bay. It is simply a fan controller, with no thermometers or USB ports. Each channel has a simple potentiometer with a knob, an LED indicator above it, and a small button below it.
Figure 4 exhibits the side of the controller, where you see the holes for the screws.
Figure 5 presents the rear side of the controller. Notice the six heatsinks for the voltage regulators. You can also see, from left to right, the motherboard PWM connector, the six fan outputs, and the main power connector.