Compact size: fits all ATX systems with a depth of 140 mm. FULL MODULAR: To optimize airflow and create a better ventilated system, use only the cables that are necessary. 80 PLUS GOLD: Power conversion wastes less energy, so use less electricity and practice eco-friendliness. PREMIUM HYBRID FAN CONTROL: Fanless Mode offers the quietest performance possible. Users can choose between Seasonic S2FC (fan control without Fanless Mode) and S3FC (fan control with Fanless Mode) using the fan control button on the back of the power supply.