HPE 656596-B21 750W Common Slot Platinum Hot-Plug Power Supply — Reliable and Energy Efficient Enterprise Power Solution

The HPE 656596-B21 is a 750-watt Common Slot Platinum Hot-Plug Power Supply engineered for Hewlett Packard Enterprise ProLiant servers. It delivers high-efficiency power output, exceptional reliability, and energy savings tailored to meet the demands of modern enterprise data centers. Designed with scalability, redundancy, and sustainability in mind, this PSU ensures seamless operation and continuous uptime for mission-critical systems.

Exceptional Power Efficiency

Built with 80 PLUS Platinum certification, the HPE 656596-B21 achieves an impressive 94% energy conversion efficiency, reducing power loss and minimizing heat generation. This high efficiency leads to lower energy costs and decreases the cooling requirements in server environments. Its optimized power utilization aligns with green computing initiatives, making it ideal for enterprises aiming to reduce their carbon footprint without compromising performance.

Common Slot Design for Easy Integration

The 656596-B21 belongs to HPE’s Common Slot Power Supply (CSPS) family — a modular system designed for maximum flexibility and compatibility. The common slot form factor allows the same power supply to be used across multiple HPE ProLiant and storage platforms, simplifying maintenance, reducing spare part inventories, and streamlining system upgrades. This modularity offers IT departments a cost-effective approach to power management across large-scale operations.

Hot-Plug Capability for Continuous Uptime

One of the defining features of the HPE 656596-B21 is its hot-plug capability. This allows IT administrators to replace or add power supplies without shutting down the system. For data centers and enterprise environments where uptime is critical, this feature ensures continuous productivity and reduces the risk of unplanned downtime. It supports redundant (1+1 or N+1) configurations, enabling one PSU to back up another in case of failure, guaranteeing operational continuity.

Intelligent Power Management and Monitoring

The HPE 656596-B21 integrates seamlessly with HPE iLO (Integrated Lights-Out) and HPE Power Discovery Services, providing advanced power monitoring, diagnostics, and control capabilities. Administrators can monitor energy usage, track efficiency, and identify performance bottlenecks in real time. This level of management helps data center operators balance power loads across systems, improving efficiency while maintaining hardware longevity.

Superior Reliability and Safety

Engineered for enterprise-class performance, the HPE 656596-B21 includes comprehensive protection mechanisms such as overvoltage, overcurrent, short-circuit, and thermal safeguards. These protections prevent damage to the server and connected components in the event of electrical faults or fluctuations. The PSU’s rugged build quality ensures stability under heavy workloads, making it suitable for high-performance computing, virtualization, and storage environments.

Compact and Energy-Saving Design

With a lightweight design (approx. 1.36 kg) and compact build, this 750W PSU is easy to install in HPE server racks. Its energy-saving capabilities are optimized for sustained workloads, ensuring that systems operate at maximum efficiency with minimal waste. This balance between power output and energy conservation makes it an excellent choice for organizations that value sustainability and cost control.

Enhanced Cooling and Noise Control

The PSU includes a smart fan system that automatically adjusts its speed based on temperature and workload. This ensures efficient cooling during high-demand operations while keeping noise levels low during normal loads. By maintaining optimal thermal conditions, the PSU extends the overall lifespan of server components and contributes to consistent system performance.

Broad Compatibility

The HPE 656596-B21 is compatible with a wide range of HPE servers, including ProLiant Gen8 and Gen9 models such as the DL360, DL380, ML350, and similar platforms. It supports both standard and redundant power configurations, allowing IT departments to tailor deployment according to the specific needs of their data center or enterprise setup.

Key Specifications

Model: 656596-B21
Power Output: 750W
Efficiency: 80 PLUS Platinum (up to 94%)
Form Factor: Common Slot Hot-Plug
Input Voltage: 100–240V AC
Redundancy: 1+1 and N+1 configurations supported
Cooling: Variable-speed intelligent fan
Weight: Approximately 1.36 kg
Protection Features: Overvoltage, Overcurrent, Short-Circuit, Thermal
Compatibility: HPE ProLiant Gen8 and Gen9 servers
Environmental Standards: Low halogen, RoHS compliant

Benefits of Using HPE 656596-B21

The HPE 656596-B21 provides a combination of efficiency, reliability, and ease of management, making it a dependable choice for any enterprise-scale IT infrastructure. With its hot-plug design, administrators can maintain continuous service availability while performing maintenance or upgrades. Its compatibility across multiple HPE platforms reduces costs, simplifies logistics, and ensures scalability as business demands grow.

This PSU’s advanced energy efficiency not only contributes to lower operational expenses but also supports global environmental initiatives by reducing power waste. The intelligent monitoring system ensures proactive management, minimizing the risk of outages and optimizing data center performance.

Conclusion

The HPE 656596-B21 750W Common Slot Platinum Hot-Plug Power Supply is built for modern enterprises that demand high performance, superior efficiency, and consistent uptime. Combining Platinum-level energy efficiency, intelligent monitoring, and hot-swappable convenience, it delivers a robust solution for power-hungry applications and critical workloads.

Whether powering a single server or a full rack of virtualized systems, the 656596-B21 ensures stable, efficient, and reliable energy delivery, making it an essential component for maintaining operational excellence in any data center.