... whole system.3. Super low noise: noise is less than 28dB at light load, less than 35dB at full load.4. High Efficiency ... fan.Noise: 21dBA.Voltage Regulation Time: 17MS.High Efficiency: more than 70%.Six Protect function: OVP, UVP,OCP ,OLP , SCP, lightning ... 45 .Certification: CE, ROHS, CCC.Certificate No.:2008010907292198 pangu s350 energy-saving atx power supply