A rack PDU, or rack-mounted power distribution unit, is an electrical device designed to distribute power to multiple IT equipment and devices within a data center environment. It is mounted within a server rack and connects to a primary power source. The rack PDU then channels power to individual servers, switches, and other devices in the rack through multiple outlets. Depending on the type, rack PDUs may offer features like metering, monitoring, and remote management, providing data center administrators with insights into power consumption, load balancing, and ensuring a reliable power supply for critical equipment.