Cabinet PDUs help share power in data centers. They keep IT equipment running smoothly. Modern infrastructures typically rely on rack-level Power Distribution Units (PDUs), industrial CEE connectors, and structured cabinet designs to manage power connections efficiently. This article explores how power is connected inside modern data center racks, examining the flow of electricity. One area of improvement is inside the rack with the growing importance of intelligent Rack Power Distribution Units (rack PDUs). As the last link in the power chain delivering critical power to IT loads, intelligent rack PDUs are a strategic asset for achieving high availability through elevated. Balanced electrical loads, especially in three-phase systems, can reduce voltage drops and increase equipment longevity.