HPE 720484-B21 800W Flex Slot Universal Hot Plug PSU

• Brand: HPE
• Option Part Number: 720484-B21
• Product Type: 800W Flex Slot Universal Hot Plug Power Supply
• Power Output: 800W
• Power Supply Family: HPE Flex Slot
• AC Input Voltage Range: 200–277VAC
• AC Nominal Input Voltages: 200V, 208V, 230V, 240V, 277V
• AC Frequency: 50–60Hz
• 380VDC Support: Yes
• 380VDC Nominal Input: 380VDC
• 380VDC Input Range: 240–420VDC
• AC Power Factor: 0.99
• 380VDC Power Factor: 1.00
• Operating Temperature: 5°C to 55°C (41°F to 131°F)
• Operating Relative Humidity: 5%–95%, non-condensing
• AC Operating Elevation: Up to 3,048m / 10,000ft with specified altitude temperature derating
• Storage Temperature: -40°C to 85°C (-40°F to 185°F)
• Storage Relative Humidity: 5%–95%, non-condensing
• Storage Elevation: Up to 50,000ft
• Dimensions (W × H × D): 6.80 × 4.04 × 22.53cm (2.68 × 1.59 × 8.87in) for AC form factor
• DC Form-Factor Dimensions: 4.03 × 6.80 × 18.29cm (1.58 × 2.67 × 7.20in)
• Shipping Dimensions: 37.77 × 18.42 × 14.30cm
• Shipping Weight: 1.59kg (3.5lb)
• Kit Contents: Power supply unit and installation/safety guide
• HPE Generic Part Number: 735037-001
• HPE Spare Part Number: 754379-001
• Compatibility - Ultra Short: Supported HPE Flex Slot systems; verify exact model
• Documented HPE Platform Example: HPE Apollo 4200 Gen9
• Important Procurement Check: Verify server model, PSU configuration and facility AC/DC input before ordering

Why Choose This Product?

• 800W capacity - Gives buyers a clearly defined power rating for compatible HPE server configurations.
• 277VAC capability - Provides a genuine advantage for facilities using high-line AC distribution rather than conventional 100–240VAC infrastructure.380VDC support ? Makes this PSU relevant to compatible high-voltage DC data-center architectures that require a different input design from conventional AC-only supplies. 
• Hot-plug serviceability - Helps infrastructure teams perform PSU replacement on supported systems while maintaining service continuity where redundant power is configured.
• Flex Slot compatibility - Provides an HPE-standardized PSU form factor for supported platforms, simplifying hardware maintenance planning.
• Documented efficiency - Published efficiency figures up to 92.8% at 380VDC allow power planners to evaluate electrical performance using actual specification data rather than generic efficiency claims. 
• OEM identification - The 720484-B21 option number, generic number 735037-001 and spare number 754379-001 provide multiple references for procurement and service teams.
• Lifecycle value - A replacement power supply can restore an affected server without requiring replacement of the entire server when the PSU is the failed component.