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Power input module handled DC feeds reliably.
775595-B21
HPE 900W AC 240VDC Power Input Module
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Name:
775595-B21
- Description:
- HPE 900W AC 240VDC Power Input Module
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775595-B21 Overview
775595-B21 is an 850W modular ATX power supply designed to meet the demanding needs of high-performance systems. It comes with a Gold 80 PLUS certification, accepts an input voltage of 100–240V and features Active PFC for improved efficiency. The unit sports a 135mm Fluid Dynamic fan equipped with zero RPM mode for quieter operation under low loads, and incorporates essential protections such as OCP, OVP, and SCP to safeguard your components.
This power supply offers a comprehensive range of connectors including a single ATX 24-pin, dual EPS 4+4 pin for CPU, four PCIe (6+2) connectors for GPUs, and eight SATA power connectors in addition to four Molex connectors. Its sleeved cables and robust build quality make it ideally suited for use in gaming rigs, workstations, and enterprise server systems, ensuring high efficiency at 94% with reliable performance and low noise levels.
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775595-B21 Specifications
- Product Type
- Power Supply
- Wattage
- 850W
- 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
- 135mm
- Fan Bearing Type
- Fluid Dynamic
- Zero RPM Mode
- Yes
- Efficiency Rating
- 94%
- Protections
- OCP / OVP / SCP
- ATX 24-Pin Connectors
- 1
- EPS (CPU) 4+4 Pin
- 2
- PCIe (6+2) Connectors
- 4
- SATA Power Connectors
- 8
- Molex Connectors
- 4
- Floppy Connector
- No
- Cable Type
- Sleeved
- RGB Lighting
- No
- MTBF (Mean Time Between Failures)
- 150,000 hours
- Operating Temperature
- 50°C
- Product Name
- 775595-B21 850W Modular ATX Gold Power Supply
- Height
- 5.5 inches
- Width
- 5.9 inches
- Depth
- 6.3 inches
- Weight
- 4.5 lbs
775595-B21 Use Case
High-Availability Data Center Power Redundancy
In a financial services data center running mission-critical HPE ProLiant servers, the 775595-B21 HPE 900W AC 240VDC Power Input Module is deployed in an N+1 redundant power architecture. This configuration ensures seamless failover during an AC mains fault, delivering continuous 240VDC to server backplanes. Benefit: Achieves 99.999% uptime SLAs, minimizes unplanned downtime risk, and strengthens business continuity.
Industrial IoT Edge Node Power Stabilization
On a manufacturing plant floor, edge computing nodes process real-time sensor data via HPE Edgeline systems. Each node uses the 775595-B21 900W AC to 240VDC module to convert variable factory AC input to stable DC. Hot-swappable capability enables live replacement without shutdown. Benefit: Guarantees resilient power in harsh environments, reduces maintenance windows, and sustains continuous analytics for predictive maintenance.
High-Density Virtualization Cluster Efficiency
In a university research HPC environment running dense virtualization on HPE BladeSystem, the 775595-B21 module delivers 900W of 240VDC directly to blade enclosures. By optimizing DC distribution and eliminating intermediate conversion, rack power losses are reduced. Benefit: Improves power utilization effectiveness (PUE), lowers cooling requirements, and supports high VM density without infrastructure overhaul.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 775595-B21 |  867875-B21 |  JL821A |  AF460A |  720479-B21 | |
|---|---|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Wattage | 850W | 850W | 850W | 450W | 750W |
| Use Case | Gaming / Workstation / Enterprise Server | Workstation / Gaming / Enterprise Server | Gaming / Workstation / General Use | General Use | Gaming / Workstation / Enterprise Server |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Modularity | Modular | Modular | Modular | Non-Modular | Modular |
| 80 PLUS Certification | Gold | Gold | Gold | 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 | N/A | N/A | No |
| Input Voltage | 100–240V | 100–240V | 110–240V | 100–240V | 100–240V |
| Hot-Swap Capable | No | No | No | No | No |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Fan Size | 135mm | 120mm | 120mm | 120mm | 120mm |
| Fan Bearing Type | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Sleeve | Fluid Dynamic |
| Zero RPM Mode | Yes | Yes | Yes | Yes | Yes |
| Efficiency Rating | 94% | 92% | 92% | 85% | 92% |
| Protections | OCP / OVP / SCP | OCP / OVP / SCP | OCP / OVP / SCP / OTP | OCP / OVP / SCP / OTP | OCP / OVP / UVP / SCP |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| EPS (CPU) 4+4 Pin | 2 | 1 | 2 | 1 | 1 |
| PCIe (6+2) Connectors | 4 | 2 | 2 | 1 | 2 |
| SATA Power Connectors | 8 | 6 | 6 | 4 | 6 |
| Molex Connectors | 4 | 4 | 4 | 2 | 4 |
| Floppy Connector | No | No | No | No | No |
| Cable Type | Sleeved | Flat | 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 | 50°C | 40°C | 50°C | 50°C | 55°C |
| Product Name | 775595-B21 850W Modular ATX Gold Power Supply | 867875-B21 High-Performance Modular ATX Power Supply | JL821A 850W Modular ATX Power Supply | AF460A 450W ATX Power Supply | 720479-B21 High Performance ATX Power Supply |
| Height | 5.5 inches | 5.5 inches | 5.5 inches | 5.5 inches | 5.5 inches |
| Width | 5.9 inches | 5.0 inches | 5.9 inches | 8.6 inches | 5.9 inches |
| Depth | 6.3 inches | 8.0 inches | 8.3 inches | 5.9 inches | 6.3 inches |
| Weight | 4.5 lbs | 4.5 lbs | 4.8 lbs | 6.5 lbs | 4.6 lbs |
Reviews & Ratings
A
Aamir Bashir
4
OEM part worked without configuration.
J
Jason Lee
5
Stable and robust.
I
Irfan Javed
3
Good quality electrical component.
S
Sven Karlsson
4
Dependable module.
Questions & Answers
What is the HPE 900W AC 240VDC Power Input Module (SKU 775595-B21)?
The HPE 775595-B21 is a high-efficiency, hot-pluggable 900W power input module designed for HPE ProLiant and BladeSystem servers to provide reliable AC 200-240V or 240VDC power delivery.
What are the key features and specifications of the HPE 775595-B21 power input module?
This module delivers 900W output, supports 200–240VAC at 50/60Hz or 240VDC input, achieves up to 94% efficiency, features hot-swappable design, and meets UL, CE, FCC, and RoHS certifications.
Which HPE servers are compatible with the 775595-B21 power input module?
The 775595-B21 is compatible with select HPE ProLiant DL, ML, and BL series servers including Gen8, Gen9, and Gen10 models that accept 900W power supplies.
How do I install the HPE 900W AC 240VDC power input module in my server?
Power down the server or ensure redundant modules remain online, slide the module into an empty power bay until it clicks, then reconnect the input power cable and verify LED status.