The IBM 74P4343 is a 16V/12A voltage regulator module (VRM) designed for centerplane power distribution in IBM eServer xSeries 440, 445, and 455 rack servers. This component regulates and delivers stable power to processor and chipset circuits, supporting multi-socket configurations across all model variants of these legacy enterprise systems. The module integrates directly into the server's motherboard centerplane, providing the power conditioning necessary for reliable multi-processor operation in data center environments. Compatibility spans the full xSeries 440/445/455 lineup, making it essential for repair and restoration of these systems. Typical applications include power restoration in refurbished deployments and preventive component replacement for systems requiring sustained uptime.
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