The HPE 866793-001 is an 800 W power supply unit designed for server applications, featuring Titanium-level efficiency with 96% energy conversion performance. This flexible slot hot-plug power supply operates on 200-240 V AC input and supports low halogen construction for environmental compliance. The unit enables seamless power redundancy and maintenance through hot-swappable capability, allowing replacement without server downtime. Compatibility requires identical spare part numbers within the same server system, as mixing different power supply models is not supported. Engineered for reliable performance in data center environments, this power supply delivers stable power distribution with minimal energy loss. The compact design integrates efficiently into HPE server chassis while maintaining optimal thermal management. Built to enterprise-grade standards, this component ensures consistent power delivery for critical server operations with robust construction and precise voltage regulation.