Basic Upgradeable rPDUs provide reliable power distribution to critical IT equipment within a rack or cabinet. Benefits With the Geist Upgradeable hot-swap technology, users may easily transform basic rPDUs to metered or monitored PDUs with the addition of the appropriate Interchangeable Monitoring Device (IMD). Reliable rack power distribution. Every unit is 100% tested for reliability and functionality. Simple and convenient configuration options for cord lengths and chassis colors. Standard three-year warranty, upgraded to a five-year warranty with product registration.