The Thermaltake Litepower Gen3 550W is a 80 PLUS 230V Standard certified APFC non-modular PSU featuring 120mm ultra quiet fan delivering excellent airflow at an exceptionally low noise level, multiple connectors, high quality components, high amperage single +12V rail, built-in industrial grade protection.,The Thermaltake Litepower Gen3 550W is a 80 PLUS 230V Standard certified APFC non-modular PSU