The IBM 911X-5158 Power Supply Unit is an 850W AC power source designed for seamless integration into IBM's server solutions. Its hot-swap capability allows for easy replacement and maintenance without shutting down the system, facilitating uninterrupted operation. This feature is especially crucial in environments where system availability and uptime are critical. The PSU delivers a solid 850W of power, ensuring sufficient power for the server's components. Built with reliability in mind, it features protection against a wide range of electrical issues, such as power surges and spikes, ensuring the longevity of both the power supply and the server. The IBM 911X-5158's efficient design not only guarantees a reliable power solution but also contributes to the overall energy efficiency of your IT infrastructure.