The user can control the speed of the fans. The controller is mounted on 3.5" bay, it can control the fan individually by rotary switch.
Detect the temperature for each fan speed
Fit into a standard 3.5" drive bay
Adjustable Fan Speed switch Blue Color LCD indicator represent for fan speed
Input Voltage: 12V + 10%
Output Voltage: 7V to 12 V
It can be mounted on desktop casing without screws