IBM 73Y9551 server / storage / networking hardware Server Hardware / Parts

The IBM 73Y9551 is a Distributed Converter Assembly (DCA), carrying the supplier reference ‘DCA-T24’, part of the bulk power subsystem fitted to IBM’s larger Power server chassis such as the Power 795 range. The DCA converts the intermediate DC voltage distributed by the bulk power distributors down to the specific voltages individual components such as processor books and I/O drawers require, sitting further downstream in the power chain than the bulk power regulators and distributors. Systems built around this bulk-power architecture remain in service across many established enterprise deployments, and a genuine replacement DCA is required whenever a converter assembly fails or when a bulk-power subsystem is rebuilt from spares. Specifiers should confirm the exact host chassis and DCA revision before ordering, since the ‘T24’ suffix denotes a specific voltage/current rating within the DCA family. Tech-Star (UK-based, shipped worldwide) supplies the 73Y9551 for engineers maintaining Power server bulk-power redundancy.