The new Xilence Performance C series is focusing on the essentials. Designed for office and home computers, the new Performance C series delivers stable voltages with high efficiency (ErP2014). This guarantees a considerably low fan noise. Four built-in safety circuits ensure safe operation at all times.- extremely silent cooling: large 120mm fan- excellent air flow design for a better heat dissipation- following safety design:- Over Voltage Protection (OVP)- Under Voltage Protection (UVP)- Short Circuit Protection (SCP)- Over Load Protection (OLP)- low stand-by consumption- complies with ErP2014 norm- active-PFC