HPE 647594-B21 460W Common Slot Platinum Hot-Plug Power Supply – Efficient, Reliable Power for HPE ProLiant Servers

The HPE 647594-B21 460W Common Slot Platinum Hot-Plug Power Supply is a high-efficiency, enterprise-grade power module engineered to deliver stable, energy-optimized performance for HPE ProLiant Gen8 and Gen9 servers. Built for scalability, reliability, and intelligent power management, this PSU offers a perfect balance between efficiency and durability, making it a vital component for modern data centers and enterprise IT environments.

Exceptional Power Efficiency

With 80 PLUS Platinum certification, the HPE 647594-B21 achieves up to 94% energy conversion efficiency, drastically reducing energy waste and heat output compared to standard power supplies. This efficiency not only lowers electricity costs but also reduces the load on cooling systems, leading to long-term operational savings. It’s an environmentally conscious choice that aligns with green data center standards, helping organizations minimize their carbon footprint while maintaining peak server performance.

Designed for Continuous Uptime

The hot-plug functionality of the 647594-B21 allows for seamless installation or replacement without powering down the server. This feature ensures that business-critical systems remain operational even during maintenance or upgrades. The ability to swap the power supply in real time makes it ideal for enterprises that prioritize uptime, reliability, and continuous productivity across their IT operations.

Common Slot Compatibility

As part of the HPE Common Slot (CS) family, this PSU shares a unified mechanical and electrical design compatible across a wide range of HPE ProLiant and storage platforms. The modular common slot system provides exceptional flexibility, allowing IT managers to easily replace, upgrade, or configure power solutions to match specific server workloads or redundancy requirements. This modularity simplifies management and reduces overall inventory costs, enabling a more efficient infrastructure lifecycle.

Intelligent Power Management

The HPE 647594-B21 supports integration with HPE’s iLO (Integrated Lights-Out) and HPE Power Discovery Services, enabling real-time monitoring and advanced energy management capabilities. Administrators can track power consumption, efficiency, and thermal conditions, ensuring optimal load balancing and preventing power inefficiencies. With intelligent reporting and alerting features, IT teams can proactively maintain system health and performance without the need for manual intervention.

Superior Build and Reliability

Built to meet enterprise-grade standards, the 647594-B21 provides consistent, stable power delivery across varying loads. It includes advanced protection mechanisms such as overvoltage, overcurrent, short-circuit, and thermal safeguards that prevent potential damage to server components. This durable design ensures long-lasting performance under demanding workloads, minimizing downtime and protecting valuable IT infrastructure from unexpected failures.

Compact, Scalable, and Modular

Weighing approximately 1.36 kg, the PSU is lightweight yet robust, making it easy to handle and install in server racks. The 460W output makes it ideal for mid-range workloads, small to medium-sized enterprises, or energy-optimized environments where efficiency and scalability are key. It supports redundant configurations (1+1 or N+1), ensuring uninterrupted operation even if one power supply fails — a crucial feature for data centers managing mission-critical applications.

Global Power Compatibility

The HPE 647594-B21 supports a wide AC input range (100–240V), making it adaptable to various power infrastructures across regions. Its design meets global safety and environmental standards, including low halogen compliance, to ensure sustainable, eco-friendly operation without compromising reliability or performance.

Silent and Efficient Cooling

The PSU features intelligent fan speed control that adjusts airflow according to power load and internal temperature. This design minimizes noise levels during operation while maintaining optimal cooling efficiency, extending component lifespan and improving energy conservation throughout the system.

Key Specifications

• Model Number: 647594-B21

• Power Output: 460 Watts

• Efficiency Certification: 80 PLUS Platinum (up to 94%)

• Input Voltage Range: 100–240V AC

• Form Factor: HPE Common Slot Hot-Plug

• Compatibility: HPE ProLiant Gen8/Gen9 servers

• Hot-Plug Support: Yes

• Redundancy Options: 1+1, N+1 configurations

• Protection Features: Overvoltage, Overcurrent, Short Circuit, Thermal

• Cooling System: Variable-speed intelligent fan

• Weight: Approximately 1.36 kg

Benefits of Using HPE 647594-B21

The HPE 647594-B21 offers excellent efficiency, scalable redundancy, and seamless manageability — making it one of the most reliable and sustainable PSUs in HPE’s lineup. It supports data center optimization by lowering power usage and improving performance consistency across networked systems. Its compatibility with the Common Slot ecosystem means fewer spare parts to manage and quicker replacements when needed.

Whether it’s for virtualization, enterprise storage, or compute-intensive workloads, this PSU delivers the dependable performance required to keep your infrastructure running smoothly. By combining high efficiency, intelligent monitoring, and solid protection features, the 647594-B21 helps organizations achieve operational excellence with lower total cost of ownership.

Conclusion

The HPE 647594-B21 460W Common Slot Platinum Hot-Plug Power Supply is an ideal solution for enterprises seeking energy efficiency, flexibility, and reliability in their power systems. It offers unmatched uptime support, advanced power management capabilities, and seamless compatibility across HPE platforms.

With its balance of performance, durability, and sustainability, this PSU is a smart choice for data centers aiming to maintain high availability and efficiency in demanding environments.