The Thermaltake TR2 S 650W ATX power supply unit delivers reliable power for desktop computer systems with its 650 watt continuous output capacity. This power supply features 80 Plus Black certification, ensuring high energy efficiency with at least 80 percent efficiency at 20 percent, 50 percent, and 100 percent load under 115 volt conditions. The unit utilizes active power factor correction technology for stable operation and reduced harmonic distortion. It includes a 120 millimeter cooling fan with intelligent temperature control that adjusts fan speed based on thermal conditions, maintaining optimal operating temperatures while minimizing noise. The modular cable design allows users to connect only the necessary cables, improving airflow within the computer case and simplifying cable management. This power supply supports modern ATX standards and includes essential protections against over-voltage, under-voltage, over-current, short-circuit, and over-power situations. It provides multiple connectors including 24-pin ATX, 8-pin EPS, PCI Express connectors for graphics cards, SATA connectors for storage devices, and peripheral connectors. The compact dimensions measure 150 mm in length, 140 mm in width, and 86 mm in height, compatible with most standard ATX computer cases. The black finish and clean aesthetic integrate well with various computer builds. This power supply operates within an ambient temperature range of 0 to 40 degrees Celsius and maintains stable power delivery across varying load conditions. The unit weighs approximately 1.8 kg and comes in retail packaging with all necessary mounting hardware and documentation. As a successor model of previous TR2 series power supplies, this unit continues Thermaltake's focus on reliable power delivery for mainstream computing applications.