4-pin cooling fan speed controller 6-channel adapter fans Description: Increase the speed to lower the temperature of the computer parts when the computer parts are busy. Reduce speed to reduce noise and power consumption when computer parts are free. Wentylator can be connected do 3PIN/4pin interfaces to adjust speed. The governor is installed in the chassis position, which is convenient to install and does not take up space. Available bracket do install fan speed controller. Available adjustment knob do adjust the speed of the cooling fan. Specification: Power Interface: 4-pin Support for 4-pin/3-pin fans Size: 12*5.8 cm Input voltage: direct current 12 V Output voltage: 5 V-11,8 V Support 6 channels of fan speed control at the same time, The package includes: 1 piece cooling fan speed controller