Vertiv™ Geist™ rack power distribution units (rPDUs) with the new, patented Combination Outlet C13/C19 option that supports C14 and C20 plug types, eliminates the complexity in deploying and managing IT rack configurations by adapting to any mix of hardware power configuration needs. When purchasing equipment, IT managers no longer need to define the type of IEC receptacle required or specify the location of receptacles on the rPDU, because every outlet accepts both C14 and C20 plug types. Moreover, data center managers can now avoid having to replace rPDUs as rack and power configurations change over time, substantially improving the life cycle and return on investment for rPDUs. The combination outlet is available on the Geist Upgradeable Basic, Metered, and Unit-Level Monitored rPDUs, and Geist UPDU models. The receptacles on the Combination Outlet are color-coded by circuit for instant identification and are designed to provide high cable retention and P-Lock compatibility to securely lock power cords in place and eliminate downtime due to vibrations, human error, or accidental disconnects during rack maintenance. The outlet is UL tested and compliant.