Apevia ATX-AS500W-BK. Nominal power: 500 W, AC input voltage: 115 - 230 V, AC input frequency: 50 - 60 Hz. Fan diameter: 80 mm. Motherboard power connector: 20+4 pin ATX. Mean time between failures (MTBF): 100000 h. Operating temperature range (T-T): 0 - 40 °C, Operating relative humidity range: 20 - 90 %