This is a Seasonic industrial power supply is 80 PLUS® efficiency rated and it features a high-reliability ball bearing fan. Fully modular cables and easy-swap connectors add a new dimension to its versatility, while the Seasonic Smart and Silent Fan Control (S2FC) system make it a silent performer. These units comply with the latest PFC harmonics (IEC1000-3-2 and EN61000-3-2 standards) and are protected against short circuit, over-voltage and over-power. On the 3.3V rail there is no minimum load requirement for this unit to work properly. Read more about Seasonic SS-400H1U 400W 80+ APFC 1U Modular Power Supply on the official Seasonic website Intel EPS1U v2.1 and ATX 12 V v2.2 compliant Forward converter circuit High efficiency and reliability for industrial level Easy-swap connector design 40 mm double ball bearing fan Fully modular cables Smart and Silent Fan Control (S2FC) Zero minimum load on 3.3 V rail Short circuit protection on all outputs Over-voltage protection Over-power protection 100 % HiPot test 100 % Burn-in, high temperature cycled on/off PFC harmonics compliance: IEC1000-3-2 and EN61000-3-2 standards
