About this item650W 80+ Gold Certified PSU – Provides reliable, efficient power for gaming PCs and high-performance builds.Connectors: 1 x 20/24pin Main Power, 2 x P8(4+4P) ESP 12V, 4 x SATA + 4 x 8(6+2)pin PCI-E, 4 x Peripheral, 1 x Floppy. Single 12V Output for Higher Power UsageSemi-Modular Design for Clean Builds – Connect only the cables you need, improving airflow and cable management.Quiet 135mm Thermally Controlled Fan – Automatically adjusts speed for optimal cooling while minimizing noise. Output: +3.3V@20A, +5V@20A, +12V@66A, -12V@0.3A, +5Vsb@3AHeavy Duty Protections: Short-Circuit/ Over-Voltage/ Over-Power/ Under-Voltage safeguards keep your PC safe. Double forward converter design. Supports ATX 12V 2.3 version. Supports dual/quad core CPUs. Supports SLI/Crossfire/Haswell. Large japanese capacitor.The power supply will not power on simply by connecting the power cord to both the power supply and wall outlet. Ensure that all the power supply cables are properly connected to the PC for it to power on.