Features Application for HDD Cooler and CPU Fan and CASE Fan 4 channel fan speed control panel, adjust fan speed manually from 1300 to 4000 RPM With the embedded VR function to change the fan speed, instead of external PCB Optimize noise level and manage the air inside the case properly Good ventilation by 80x80x25mm and 80x80x25mm fans with optimum airflow Easy to install and work