Seasonic PSUSEA400H2U80P, Input frequency 50 / 60 Hz, Inrush current, cold start 100A max, Line regulation +/-1% typical, Cross regulation +/-5% typical, Ripple / noise 1%, MTBF, full load@25? amb >100K hours (Excluding the DC fan), Power Factor Correction Active PFC 99% typical, Safety CUL, TUV, CB, CCC, BSMI, EMC CE, FCC, C-tick. The Seasonic SS-400 H1U is an industrial power supply that features an 80 PLUS efficiency rating and high reliability ball bearing fan. Fully modular cables and easy-swap connectors add a new dimension to its versatility.