Up for sale pre-owned in good working condition Reliable 400W ATX Power Supply from Seasonic – Ideal for Stable Desktop Builds.The Seasonic SS-400ES-F3 is a high-quality 400W ATX power supply designed for dependable performance in desktop PCs and industrial systems. Certified with 80 PLUS Bronze efficiency, it delivers over 82% energy efficiency, helping reduce power consumption and heat output without sacrificing performance.Key Features:

• Power Output: 400W total with multiple rails: +3.3V @ 20A, +5V @ 20A, +12V combined @ 30A, -12V @ 0.8A, +5Vsb @ 2.5A
• Active PFC: Ensures stable operation across global voltages (100–240V AC input), ideal for international use
• Smart Fan Control: 80mm fan with S2FC (Smart & Silent Fan Control) for quiet operation under normal loads
• Protections: Includes over-voltage, over-power, short-circuit, and hi-pot tested for safety and reliability
• Connectors: 20+4 pin ATX, 4+4 pin CPU, SATA, Molex, and floppy connectors – compatible with most systems
• Compliance: Meets Intel ATX12V v2.31 standards, RoHS compliant, and certified with CE, FCC, TUV, CB, and CCC
• Build Quality: 100% burn-in tested, high-temperature cycled, and built with low ripple & noise for clean power delivery
• Physical Specifications:
• Dimensions: 140mm (W) × 150mm (D) × 86mm (H)
• Weight: 1.6 kg
• Mounting: Panel mount
• Operating Temperature: 0°C to +50°C

Perfect for mid-tier desktops, workstations, or PXI systems, this PSU combines durability, safety, and energy efficiency in a compact design. While some users note increased fan noise under heavy load, its overall reliability and brand reputation make it a trusted choice.