Features: 1.[LCD Display] The speed controller has a ultra wide viewing angle LCD display, black screen and pure blue number display, you can see the computer work at a glance. 2.[Adjustable Speed] The fan speed of the PC fan speed controller can be adjusted, and the fan has low resonance noise during operation, and the PWM circuit speed control effectively reduces high frequency noise. 3.[Heat Dissipation Design] Adopting patented heat dissipation design, the working temperature of the computer is always lower than 38 degree, and 4 sets of fans can be controlled by the controller. 4.[Sturdy and Durable] Made of ABS and aluminum alloy materials, the fan controller is sturdy and durable, and has a long service life. The aluminum alloy panel creates the top texture and brings you a better experience. 5.[Computer Protection] When the computer temperature exceeds 60 degrees, the temperature icon will flash and an alarm will sound. When the fan is stuck, the abnormal fan icon will flash and give an alarm. specification:Item Type: PC Fan Controller Material: ABS, Aluminum Alloy Size: Approx. 14.7 x 9 x 4.2cm / 5.8 x 3.5 x 1.7in Controllable Fans: 4 Sets of Fans Power Supply Interface: Big 4P Male Fan Interface: 3PIN, 4PIN Interface Output Voltage: 0-12V Input Voltage: 5.6-12V Display: LCD Screen Power: 20W PackageList:1 x PCFanController 1 x User Manual 4 x Stickers 4 x Screws