M12II Bronze
   ECO POWER 300
 S12II Bronze
   S12 Energy Plus
   PC Power Supply
   IPC & Server PSU
   Open Frame


The culmination of over 30 years of leading edge power supply design and production expertise enabled Seasonic to be the first power supply manufacturer to receive the coveted “80 Plus” certificate in the United States.  Now this “80 Plus” certified high efficiency power supply is available to the general market in two models, the S12 Energy+550 and the S12 Energy+650.

In response to high energy costs and increased environmental awareness, Seasonic engineers focused sharply on efficient utilization of energy. By incorporating state-of-the-art Dual Forward Converter circuit design with active power factor correction, the S12 ENERGY+ achieves industry-leading efficiency ratings. This efficiency increase over standard power supplies enables all end users -- from governmental organizations and companies to private individuals -- to enjoy substantial energy savings and operating cost reductions.

The S12 ENERGY+ also incorporates a Dual Magnetic Amplifier circuit to achieve a class-leading 3% regulation on the all important 12VDC rail to meet the high demands of high-end graphic cards, CPU’s and peripherals.

Additional performance features in the S12 ENERGY+ include the exceptional Seasonic proprietary Smart & Silent Fan Control [S2FC], a low noise 12cm ball bearing fan mounted on soft rubber cushions, and honey comb shaped ventilation holes to provide the ultimate performance in cooling and silence.  These power supplies also include Seasonic’s patented Dynamic Load function to ensure compatibility with all modern mainboards and peripherals.  The S12 ENERGY+ units comply with the latest Intel ATX12V & EPS 12V specifications. ATX, BTX and EPS systems are supported with a 24-Pin (20 Pin convertible), 4-Pin and 8-Pin mainboard connectors.

The Seasonic S12 ENERGY+ models fulfill European Union regulations for RoHS, WEEE and most major worldwide safety requirements. These power supplies represent the ultimate in efficiency, stability, silence and green innovation and redefine the term “high-end” PC power supply.

Special Features - Performance

Dual Magnetic Amplifiers [Mag-Amp]
Cross regulation tolerance on +12V lines are improved from standard 5% to 3% for optimized stability.

Double Forward Converter Design
Advanced topology for the highest efficiency.

Multiple +12V Outputs
Enhanced +12V current capability broadens utilization possibilities.

High Reliable Aluminum Electrolytic Capacitors
Top quality components increase product life & reliability.

Super High Efficiency [up to 88%]
Optimal solution for low energy consumption, noise & heat.

Active Power Factor Correction [99% PF]
Reduces line loss & power distortion.

Special Features -Silence

Smart and Silent Fan Control [S2FC]
Smart thermal control to balance noise and cooling.

12cm Double Ball Bearing Cooling Fan
Increase airflow and lifetime, reduce rotation speed and noise.

Soft-Mounting Rubber Cushions
Reduces fan rotation & vibration noise.

Ultra Ventilation [Honey Comb Structure]
Doubles the airflow & lifespan with half the RPM & noise.

Special Features -Flexibility

All in One DC Cabling Design
Supports PC, IPC, workstation, server, & dual CPU systems.

Universal Video Card Support
Supports all multiple PCI-E video cards technologies.

Patented Easy Swap Connector
Unplug the connectors easily & quickly.

Universal AC Input [Full Range]
Plug & run safely anywhere in the world.

5 Year Warranty
Our Commitments to superior quality.

Product Information

1. AC input & DC output voltage (100-240V, 50/60Hz)

2. Total Protection
Over Voltage / Over Power / Short Circuit Protection
Total protection for your power supply, your system and yourself.

3. Operating Environment
Operating temperature: 0 to 50°C. Relative Humidity: 20% to 80%.
(The rated power will reduce from 100% to 80% from 40°C to 50°C)
Shipping / Storage temperature: -40°C to 85°C
Relative Humidity: 10% to 95%.

Typically over 100,000 hours at 25°C under full load, excluding the DC fan.

5. Wire Configuration







































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