Dc-to-dc technology The DC-to-DC + LLC circuit design offers reliable, stable output to all connected components 120mm HDB fan: The Hydro dynamic Fan Bearing creates less friction, making it great for low rpm operations Silent mode: the 120mm HDB fan will remain completely Silent during low load operations and while in standby mode 80 PLUS Bronze efficiency: This certification guarantees a typical efficiency of 85% under normal operating conditions Flat black cables: the flat cables take up less space and are easier to manipulate within the chassis