Master your PC’s airflow and noise with the Razer PWM PC Fan Controller. Easily use Razer Synapse software to unlock and customize the pulse width modulation curves for up to 8 fans and enjoy lower noise levels compared to traditional DC powered fan setups. Razer PWM PC Fan Controller Master your PC’s airflow and noise with the Razer PWM PC Fan Controller. Easily use Razer Synapse software to unlock and customize the pulse width modulation curves for up to 8 fans and enjoy lower noise levels compared to traditional DC powered fan setups. Connects with up to 8 Fans for complete system control Designed to provide voltage and PWM control for up to 8 fans, the Razer PWM Fan controller supports a diverse range of PC build requirements. Custom Fan Curve Profiles for automatic fan adjustments Create custom fan curve profiles via Razer Synapse and have your case fans automatically adjust their speeds based on system temperature including the ability to run at zero RPM for total silence. Convenient Fan Monitoring to ensure optimal performance Keep track and adjust fan speeds all from a single intuitive interface with Razer Synapse software. Thin Profile that fits anywhere The Razer PWM Fan controller features a low-profile design and magnetic backing making it easy to install in tight spaces within your PC case.