The Lenovo 500W power supply (MPN: 5P51D77094) is a reliable internal power supply component for compatible Lenovo desktop computers and workstations. This power supply delivers a stable 500W output with multiple voltage rails to support various system configurations. It offers standard ATX form factor compatibility with dimensions of approximately 150 mm in width, 86 mm in height, and 140 mm in depth, weighing around 1.2 kg. The unit features multiple connectors for the motherboard, CPU, PCIe graphics cards, SATA drives, and peripherals. Designed for consistent performance, it integrates overvoltage protection, overcurrent protection, and short circuit protection circuits. The cooling system uses a 120 mm fan with intelligent temperature control, maintaining optimal operating temperatures between 0°C and 40°C ambient conditions. This power supply supports standard input voltage ranges of 100-240V AC at 50-60 Hz frequency. Cable management is facilitated by organized wiring with appropriate lengths for standard chassis layouts. The black steel casing provides durability while ensuring proper electromagnetic interference shielding. Installation requires standard mounting points compatible with most ATX and Micro-ATX cases. This component is designed for users who need a reliable power supply for office workstations, general computing applications, and moderate gaming systems. The power supply efficiency meets industry standards for typical desktop usage scenarios. All connectors feature gold-plated contacts for enhanced conductivity and corrosion resistance. The unit operates with minimal audible noise under normal load conditions, making it suitable for office environments and home setups where quiet operation is preferred.