The IBM 9406-5158 is an 850W AC Power Supply Unit (PSU) that provides a reliable and efficient power source for IBM servers and storage units. This power supply is designed to deliver consistent power to ensure the smooth operation of critical IT systems. It has an 850W power output, making it suitable for supporting a variety of hardware components that require a significant amount of power. The PSU is built with high-quality components to ensure durability and reliability, and it incorporates several protective features to safeguard your equipment against power surges, over-voltage, and short circuits. The IBM 9406-5158 is a hot-swap power supply, enabling easy replacement and maintenance without the need to power down your system, minimizing downtime and ensuring continuous operation.