HPE 800W Hot-Plug Power Supply (80 PLUS Gold, P40401-B21)

Usage Area

The HPE 800W power supply unit (P40401-B21) is designed for deployment in rack-mounted and tower servers operating within enterprise data center environments. It supports continuous 24×7 operation in server infrastructure, providing primary or redundant power delivery. The unit is suitable for mission-critical applications where hot-swap capability and power redundancy (1+1) are required to maintain system uptime. Compatibility with specific server models must be verified prior to installation.

Construction Features

• Hot-plug (hot-swap) form factor enabling replacement without server shutdown
• Redundancy support for 1+1 power configuration to ensure fault tolerance
• Enterprise-class design engineered for sustained 24×7 server workloads
• Compact PSU chassis compatible with standard server power bays
• High-efficiency power conversion architecture with Gold-level performance
• Tool-less insertion and removal mechanism for rapid field servicing

Technical Parameters

• Part Number (PN): P40401-B21
• Manufacturer: HPE
• Model: HPE 800W
• Power Output: 800 W
• Efficiency Certification: 80 PLUS Gold
• Type: Hot-plug (hot-swap)
• Class: Server-grade (Enterprise, 24×7)

Standards & Certification

The power supply unit complies with the 80 PLUS Gold certification, ensuring high energy efficiency under typical server load profiles. It is built to meet enterprise-class reliability standards for continuous operation in data center environments. The hot-plug design adheres to standard server power interface specifications, allowing integration with compatible HPE server platforms.