This 500W TESLA PSU is a non-modular power unit for enthusiasts working on a custom desktop or upgrading their existing one. The 120mm fan spins quietly to provide cooling and ensure the system will not overheat. The included connectors are a 20+4 pin main connector, a 4-pin 12V connector, two SATA connectors, three 4-pin Molex connectors, and a floppy drive connector. Any connectors not used can be safely tucked away inside the computer case.