Seasonic PSUSEA400L2U80G, Active Power Supply, Input frequency 47/63 Hz, Inrush current, cold start 100A max, Efficiency, at normal input voltage > 87%, Line regulation +/-1% typical, Load regulation +/-5% typical, Cross regulation +/-5% typical, MTBF, full load @ 25? amb. >100K hours (Excluding the DC fan), Power Factor Correction Active PFC 99% typical. SEASONIC PSUSEA400L2U80G Ss-400l 2u Active Pfc.