1. The rare CPU fan speed controller with aluminum-magnesium alloy panel has undergone multiple matt treatments and is suitable for any chassis. 4. Use PWM circuit to adjust speed to reduce high frequency noise, and at the same time reduce noise by reducing fan power 3. With a dual safety system with high temperature alarm and fan anti-seize. When the computer temperature exceeds 60 degrees, the temperature flashes and an alarm sounds. 2. Equipped with a wide LCD screen, 4 sets of fan speeds, 4 sets of temperatures are displayed on the LCD screen, so you can see the computer work at a glance 5. High-specification capacitors are to high temperatures, have a longer service life, and refuse damages such as electricity running and leakage