Antec TruePower Trio 550 - EC. Nominal power: 550 W, Hold time: 12 ms, Efficiency: 85 %. Connector(s): 3-pin Fan Sensor, Fan, 8-pin. Weight: 2300 g. Mean time between failures (MTBF): 80000 h. Certification: UL, CUL, FCC Class B, CB, TÜV FCC Class B CISPR22 Class