Seasonic S12II-620Bronze. Nominal power: 620 W, AC input voltage: 100 - 240 V, AC input frequency: 50/60 Hz. Fan diameter: 120 mm. Mean time between failures (MTBF): 100000 h. Safety: CB, CUL, UL, CCC, DEMKO, FIMKO, NEMKO, SEMKO, TUV, Certification: BSMI, CE, FCC, C-tick. Operating temperature range (T-T): 0 - 50 °C, Operating relative humidity range: 20 - 80 %