HPE 720479-B21 800W Flex Slot Platinum Hot Plug Power Supply

• Brand: HPE
• Product / Option Number: 720479-B21
• Product Type: 800W Flex Slot Platinum Hot Plug Power Supply
• PSU Family: HPE Flex Slot
• Power Output: 800W maximum rated output
• Input Voltage Range: 100–240V AC
• Input Frequency: 50-60Hz
• Nominal Input Voltages: 100V, 120V, 127V, 200V, 208V, 220V, 230V, 240V
• Nominal Input Current: 9.1A @ 100V; 7.5A @ 120V; 7.0A @ 127V; 4.4A @ 200V; 4.2A @ 208V; 4.0A @ 220V; 3.8A @ 230V; 3.7A @ 240V
• Maximum Rated Input Wattage: 906W @ 100V; 891W @ 120V; 878W @ 127V; 871W @ 200V; 870W @ 208V; 869W @ 220V; 868W @ 230V; 868W @ 240V
• Maximum Rated VA: 915VA @ 100V; 900VA @ 120V; 887VA @ 127V; 880VA @ 200V; 879VA @ 208V; 877VA @ 220V; 876VA @ 230V; 877VA @ 240V
• Efficiency: 88.3%–92.2%, depending on input voltage
• Efficiency Class: Platinum
• Power Factor 0.99
• Maximum Inrush Current: 30A peak
• Maximum Inrush Duration: 10ms
• Maximum BTU/hr: 3,090 BTU/hr @ 100V; 3,040 @ 120V; 2,997 @ 127V; 2,972 @ 200V; 2,968 @ 208V; 2,963 @ 220V; 2,960 @ 230V; 2,963 @ 240V
• Hot Plug: Yes
• Input Connector: Standard C-14 power inlet
• Physical Dimensions: 19.05 × 32.38 × 10.16 cm
• HPE Generic Part Number: 723599-001
• HPE Spare Part Number: 754381-001
• Compatibility - Short: Supported HPE Flex Slot platforms; verify exact server
• GPU/Accelerator Compatibility: Depends on the complete server configuration and PSU requirements
• PSU Mixing: HPE advises using power supplies with the same output and efficiency ratings within a server to retain available PSU features and redundancy functionality. 

Why Choose This Product?

• 800W capacity - Gives buyers a clearly defined power envelope for supported HPE server configurations without moving to a higher-capacity PSU unnecessarily.
• Platinum efficiency - Higher conversion efficiency can reduce energy lost during power conversion, supporting data-center energy-management and TCO objectives. 
• Hot-plug serviceability - Supports faster PSU maintenance on compatible servers and can reduce operational disruption during hardware servicing. 
• Wide AC input range - The 100–240V input specification makes the PSU suitable for a broad range of supported enterprise electrical environments. 
• Exact HPE option identification - SKU 720479-B21 helps procurement teams avoid ambiguity when sourcing replacement or expansion power supplies.
• Flex Slot platform architecture - Fits HPE's modular PSU ecosystem, supporting standardized maintenance practices where the server platform is compatible.
• Useful for infrastructure lifecycle management - An OEM HPE PSU can be a practical replacement component for organizations maintaining established server fleets rather than replacing complete systems.