This SMART Series 850 Watt Modular Power Supply is packed full of features! Features include High Quality 105? Japanese Main Capacitor- Japanese main capacitor provide uncompromised performance and reliability. SMART Modular Bronze series adopt 14cm cooling fan with intelligent RPM control guarantees cool performance and silent operation. Modular cable management design improves internal airflow and reduce clutter. Built in industrial-grade protections: Over Current, Over Voltage, Under Voltage, Over Power and Short-Circuit protections. SMART Modular Bronze series adopt flat modular cables not only eliminate cable clutter within the system, but takes up less space for better airflow.