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720480-B21 ✓ Verified by PartsTable
HP · PSU
WHAT YOU NEED TO KNOW
Always quote matching pair — mixed wattage causes throttling Platinum/Titanium = higher efficiency = lower power cost over time
AC or DC input? Verify customer site power
PRODUCT OVERVIEW

The HP 800W Flex Slot -48VDC Hot Plug Power Supply is a HP power supply unit built for continuous operation in enterprise server and storage platforms. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
720480-B21
SPECIFICATIONS
Part Number720480-B21
ManufacturerHP
Wattage800W
COMPONENT DIAGRAM
PULL TAB AIRFLOW 800W PLATINUM 100-240V~ 50/60Hz HP BACKPLANE CONN ~200 mm HOT-PLUG POWER SUPPLY | 800W | Platinum AC input 100-240V | Redundant pair required | Match wattage in same chassis TITLE PSU 800W PN 720480-B21 MFR HP Platinum
KEY FEATURES
•
800W Power Rating
TYPICAL APPLICATIONS
  • Server power supply replacement (failed or degraded)
  • Redundant power upgrade for high-availability
  • Power capacity upgrade for GPU or expansion configurations
  • Hot-swap power maintenance in production environments
  • Spare inventory for break-fix operations
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
754382-001Compatible
HP RPS 800W DC -48v Flexible Slot
compatible
735040-001Compatible
HP RPS 800W DC -48v Flexible Slot
compatible
735051-001Compatible
HP RPS 800W DC -48v Flexible Slot
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
735040-001SUBSTITUTE
HP RPS 800W DC -48v Flexible Slot
HPE
735051-001SUBSTITUTE
HP RPS 800W DC -48v Flexible Slot
HPE
754382-001SUBSTITUTE
HP RPS 800W DC -48v Flexible Slot
HPE
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FREQUENTLY ASKED QUESTIONS
What is 720480-B21?
720480-B21 is a HP 800W Flex Slot -48VDC Hot Plug Power Supply manufactured by HP.
What parts can replace 720480-B21?
There are 3 known substitutes for 720480-B21: 754382-001, 735040-001, 735051-001. Substitute compatibility should be verified for your specific system.
Is 720480-B21 still available?
720480-B21 is currently Unknown.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026