The EarthWatts Gold Pro series features high performance with an 80 PLUS® GOLD rating, delivering up to 92% efficiency and reducing your electricity bill. Featuring hybrid modular cabling, a whisper-quiet 120mm fan controlled by Antec’s renowned Thermal Manager, and CircuitShield™ Industrial Grade protection—all backed by our seven-year Antec Quality warranty, the EarthWatts Gold Pro series is the power supply builders choose for a stable, quiet, and efficient system. • 550W Continuous Power™ - Guaranteed 550W of Continuous Power™ from Antec • 80 PLUS® Gold certified-Up to 92% efficient, to reduce your electricity bill • AQ7 - Antec Quality 7 year warranty and lifetime global 24/7 support • 120 mm Silence - Whisper-quiet high-quality fan with long lifetime • Semi-modular cable management - Improves airflow and reduces clutter • 99% +12V - Output for maximum CPU & GPU support • Japanese Heavy-Duty Caps- High-performance capacitors ensure DC stability and regulation • 2 x PCI-E connectors for multiple GPU support • ATX12V 2.4 - Engineered according to the newest PSU guideline and compatible with the latest CPU generation • PhaseWave™ Design-A server-class full-bridge LLC design with a synchronous rectification based on a DC-DC topology • ErP Lot 6: 2013 - Compliant to the toughest energy standard available • CircuitShield™-  Full suite of industrial grade protections:  Over Current Protection (OCP)  Over Voltage Protection (OVP)  Short Circuit Protection (SCP)  Over Power Protection (OPP)  Over Temperature Protection (OTP)  Under Voltage Protection (UVP)  Surge & Inrush Protection (SIP)  No Load Operation (NLO)