Never used. Kept in climate controlled environment. 600W, ATX 12V V2.3, 100V~240V, Black High Quality 105°C Japanese Electrolytic Capacitor 105°C Japanese main capacitor provides uncompromised performance and reliability. Industrial Grade Protection Built in industrial-grade protections: Over Current, Over Voltage, Under Voltage, Over Power and Short-Circuit protections Ultra Quiet 12cm Fan New TR2 series adopt 12cm cooling fan with intelligent RPM control guarantees cool performance and silent operation. High Efficiency Circuit Design Maximum efficiency up to 88% under wide load range. 80 Plus Bronze Certified New TR2 Series saves energy through its high energy efficiency of up to 88% and is 80 PLUS Bronze certified ErP Ready New TR2 Series fulfills the EU guideline for ErP (Energy-related Products) that are scheduled to apply starting in 2010. Supports Energy Star 5.0* energy standard: New TR2 Series is suitable for use in Energy Star-compatible computers. Supports Intel Deep Power Down C6 Status: New TR2 Series helps your PC system operate more power efficiently. Corresponds to the EU directives on WEEE and RoHS: Thermaltake considers its full impact on the environment during manufacturing and maintains green facilities to ensure TR2 meets WEEE & RoHS requirements.