ELEGIANT DC 12V PWM PC CPU Temperature Controller Board - 4 Wires Fan Speed Controller with High-Temp Alarm With temperature control probe and alarm probe. Intel standard four-wire fan control protocol, support all standard four-wire interface chassis fan and CPU fan control, while supporting more than 95% of violent fan speed control, three independent control of different functions of the fan with a temperature control speed and two Road stop detection alarm. Single-channel support up to 12V5A fan, the whole board up to support a total of 12V9A current input. Multi-function three-way four-wire fan controller, the first way for the automatic temperature control speed, the second and third for the potentiometer adjustment, one or two with optional open stop alarm. Note: can not control the two-wire or three-wire fan, can not completely turn off the fan!