HPE 800W Hot-Plug Power Supply (P40423-B21) for Servers

Usage Area

The HPE 800W power supply unit (P40423-B21) is deployed in rack-mount and tower servers operating within enterprise data centers and server rooms. It is designed for continuous 24×7 operation in mission-critical infrastructure, providing primary or redundant power to server chassis. The unit supports hot-plug replacement and 1+1 redundancy configurations to maintain service availability during maintenance or power supply failure. Deployment is suitable for environments requiring high availability and minimal downtime, such as virtualized clusters, database servers, and enterprise application hosts.

Construction Features

• Hot-plug (hot-swappable) design enables replacement without server shutdown.
• Enterprise-class form factor compatible with HPE server power bays.
• Redundancy-ready architecture supports 1+1 configuration for fault tolerance.
• Constructed for continuous operation in 24×7 server environments.
• Integration with server power management for monitoring and control.
• Robust housing designed for rack and tower chassis installation.

Technical Parameters

• Part Number (PN): P40423-B21
• Manufacturer: HPE
• Model: HPE 800W
• Power Output: 800 W
• Type: Hot-plug (hot-swappable)
• Class: Server-grade (Enterprise, 24×7)

Standards & Certification

The power supply unit complies with HPE enterprise hardware standards for server components, ensuring compatibility and reliability in certified server platforms. It meets industry norms for hot-plug power supplies used in redundant configurations. Specific compliance certifications are validated through HPE’s engineering and testing processes for enterprise infrastructure equipment.