S450 EN41121
S550 EN41138
S650 EN41145

-80 Plus Bronze certified (85% efficiency)
-Xigmatek 120mm Fluid Circulative Bearing fan
-All Japanese Capacitors
-Custom DC to DC Module for 550W & 650W (12V to 3.3V and 5V module design offers notably higher efficiency)
-Double layer EMI filter
-Active PFC for better voltage regulation and higher overall efficiency
-Industrial grade protections: OVP/UVP/OPP/OCP/SCP