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Marcus Allen
5
800W PSU provided ample headroom for upgrades.
720479-B21
HPE 800W Flex Slot Platinum Hot Plug Power Supply Kit:ProLia...
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Name:
720479-B21
- Description:
- HPE 800W Flex Slot Platinum Hot Plug Power Supply Kit:ProLiant Accy - Power
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720479-B21 Overview
720479-B21 is a 750W high performance modular ATX power supply featuring Gold 80 PLUS certification and designed to operate with an input voltage of 100–240V. It comes equipped with active PFC, a 120mm fluid dynamic fan for efficient cooling, and a robust suite of protections including OCP, OVP, UVP, and SCP. The unit offers a comprehensive range of connectors, comprising one ATX 24-pin, one EPS (CPU) 4+4 pin, two PCIe (6+2) connectors, six SATA power connectors, and four Molex connectors.
Built with exceptional build quality and sleeved cables, this PSU delivers an impressive efficiency rating of 92% with low noise levels under load. Its design and performance make it an ideal choice for demanding use cases in gaming, workstations, and enterprise server environments.
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720479-B21 Specifications
- Product Type
- Power Supply
- Wattage
- 750W
- Use Case
- Gaming / Workstation / Enterprise Server
- Form Factor
- ATX
- Modularity
- Modular
- 80 PLUS Certification
- Gold
- Rail Configuration
- Single Rail
- Certifications
- 80 PLUS / CE / FCC / UL / ROHS
- Remote Monitoring
- No
- Input Voltage
- 100–240V
- Hot-Swap Capable
- No
- PFC (Power Factor Correction)
- Active PFC
- Fan Size
- 120mm
- Fan Bearing Type
- Fluid Dynamic
- Zero RPM Mode
- Yes
- Efficiency Rating
- 92%
- Protections
- OCP / OVP / UVP / SCP
- ATX 24-Pin Connectors
- 1
- EPS (CPU) 4+4 Pin
- 1
- PCIe (6+2) Connectors
- 2
- SATA Power Connectors
- 6
- Molex Connectors
- 4
- Floppy Connector
- No
- Cable Type
- Sleeved
- RGB Lighting
- No
- MTBF (Mean Time Between Failures)
- 150,000 hours
- Operating Temperature
- 55°C
- Product Name
- 720479-B21 High Performance ATX Power Supply
- Height
- 5.5 inches
- Width
- 5.9 inches
- Depth
- 6.3 inches
- Weight
- 4.6 lbs
720479-B21 Use Case
Financial Services Data Center: 24/7 Power Availability
In a global trading firm running latency-sensitive HPE ProLiant servers, the HPE 720479-B21 800W Flex Slot Platinum Hot Plug Power Supply delivers N+1 redundancy and hot-swap capability. Benefit: ensures uninterrupted market access, meets strict SLAs, and eliminates costly downtime.
Virtualized Enterprise Cloud Infrastructure Efficiency
For large VMware or Hyper-V clusters on HPE ProLiant hosts, the HPE 720479-B21 800W Platinum PSU provides 96%+ energy efficiency and hot-plug serviceability. Benefit: cuts power costs, lowers PUE, and enables non-disruptive maintenance to maximize virtualization performance.
Edge Computing & Telco Base Station Reliability
In remote 5G edge and telco base-station deployments, the HPE 720479-B21 800W Flex Slot Power Supply offers compact, high-efficiency power delivery with hot-swap support. Benefit: simplifies field service, extends hardware lifespan, and guarantees network uptime under harsh conditions.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 720479-B21 |  JD226A |  876929-B21 |  AF460A |  J2P89A | |
|---|---|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Wattage | 750W | 600W | 850W | 450W | 750W |
| Use Case | Gaming / Workstation / Enterprise Server | Gaming / Workstation / Rack Server | Gaming / Workstation / Enterprise Server | General Use | Gaming / Workstation |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Modularity | Modular | Semi-Modular | Modular | Non-Modular | Modular |
| 80 PLUS Certification | Gold | Gold | Platinum | Bronze | Gold |
| Rail Configuration | Single Rail | Single Rail | Single Rail | Single Rail | Single Rail |
| Certifications | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS |
| Remote Monitoring | No | No | No | N/A | No |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | 110–240V |
| Hot-Swap Capable | No | No | No | No | No |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Fan Size | 120mm | 120mm | 135mm | 120mm | 120mm |
| Fan Bearing Type | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Sleeve | Fluid Dynamic |
| Zero RPM Mode | Yes | Yes | Yes | Yes | Yes |
| Efficiency Rating | 92% | 92% | 92% | 85% | 92% |
| Protections | OCP / OVP / UVP / SCP | OCP / OVP / OTP | OCP / OVP / SCP / OTP | OCP / OVP / SCP / OTP | OCP / OVP / SCP |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| EPS (CPU) 4+4 Pin | 1 | 1 | 2 | 1 | 1 |
| PCIe (6+2) Connectors | 2 | 2 | 3 | 1 | 2 |
| SATA Power Connectors | 6 | 6 | 6 | 4 | 6 |
| Molex Connectors | 4 | 3 | 4 | 2 | 3 |
| Floppy Connector | No | No | No | No | No |
| Cable Type | Sleeved | Sleeved | Sleeved | Flat | Sleeved |
| RGB Lighting | No | No | No | No | No |
| MTBF (Mean Time Between Failures) | 150,000 hours | 150,000 hours | 150,000 hours | 100,000 hours | 150,000 hours |
| Operating Temperature | 55°C | 50°C | 50°C | 50°C | 50°C |
| Product Name | 720479-B21 High Performance ATX Power Supply | JD226A High Performance ATX Power Supply | 876929-B21 High-Performance Modular ATX Power Supply | AF460A 450W ATX Power Supply | J2P89A PowerPro 750 |
| Height | 5.5 inches | 5.5 inches | 5 inches | 5.5 inches | 5.5 inches |
| Width | 5.9 inches | 8.7 inches | 6 inches | 8.6 inches | 6.3 inches |
| Depth | 6.3 inches | 6.3 inches | 5.5 inches | 5.9 inches | 5.0 inches |
| Weight | 4.6 lbs | 4.5 lbs | 4 lbs | 6.5 lbs | 4.8 lbs |
Reviews & Ratings
I
Imaan Siddiq
4
Easy hot swap installation.
B
Bjorn Larsson
5
Consistent power under load.
F
Fawad Khan
3
Excellent for high demand servers.
P
Patricia Young
4
Dependable and efficient power supply.
Questions & Answers
What is the HPE 800W Flex Slot Platinum Hot Plug Power Supply Kit (SKU 720479-B21)?
The HPE 800W Flex Slot Platinum Hot Plug Power Supply Kit (SKU 720479-B21) delivers up to 800 W of 94% efficient, modular power for ProLiant servers, enabling hot-plug replacement and maximum uptime.
Which HPE ProLiant servers are compatible with SKU 720479-B21?
SKU 720479-B21 is compatible with HPE ProLiant Gen9 and Gen10 rack servers that support Flex Slot power supplies, including the DL360, DL380, and DL560 series.
How do I install the HPE 800W Flex Slot Platinum power supply?
Slide the power supply into an empty Flex Slot bay until it clicks, connect the AC power cord, and verify the LED turns green to confirm proper installation.
Can I hot-swap the HPE 800W Flex Slot Platinum power supply while the server is running?
Yes. The hot-plug design allows you to replace or add the power supply without shutting down the server, preserving continuous operation.