PC Power & Cooling Silencer 500 Dell. Nominal power: 500 W, Input current: 9 A, Hold time: 16 ms. Noise level: 34 dB. Mean time between failures (MTBF): 100000 h. Certification: UL/cUL/CE/CB/RoHS. Operating temperature range (T-T): 0 - 40 °C, Operating relative humidity range: 10 - 90 %