Supermicro PWS-741P-1R Power Module — 740W Dual-Voltage Redundant Power for Enterprise Servers

Engineered for data centers, enterprise workloads, and mission-critical applications, the Supermicro PWS-741P-1R Power Module delivers dependable, scalable power to keep your servers running smoothly under heavy loads. This 740-watt power module is designed to fit compatible Supermicro chassis, offering flexible input options, robust protection features, and streamlined maintenance. Whether you’re expanding a dense 1U rack, upgrading a backplane, or provisioning a high-availability cluster, the PWS-741P-1R provides the reliability and efficiency you demand from modern infrastructure.

• High-capacity, stable power output. The PWS-741P-1R delivers a robust 740 W of continuous power, engineered to support CPU-intensive workloads, memory-rich configurations, and high-speed I/O bursts without sacrificing stability. It uses tight voltage regulation to minimize ripple and ensure consistent performance across a wide range of operating conditions, helping to prevent instability during peak processing and data transfers. This stability directly translates to improved application performance and longer component life by reducing electrical stress on server components.

• Dual-voltage input for global deployment. Compatible with both 110 V AC and 220 V AC service, the module is designed to adapt to regional electrical standards without requiring additional adapters or power infrastructure changes. The versatile input support, combined with a broad 50/60 Hz frequency range, makes it an ideal choice for data centers, telecom rooms, and remote sites around the world. This flexibility simplifies procurement and reduces the need for multiple SKUs in multinational deployments.

• Hot-swappable design to minimize downtime. The PWS-741P-1R is engineered for hot-swapping, enabling maintenance or replacement without powering down the entire server in compatible chassis. When a module is removed or replaced, the system can continue to operate on remaining power sources, helping to maintain service levels for latency-sensitive applications. Built-in health indicators and protective circuits aid technicians by providing clear fault signals, speeding diagnostics and reducing mean time to repair (MTTR).

• Redundancy-ready for high availability. The “-1R” designation signals readiness for redundant power configurations. In a properly configured enclosure, it can be paired with another power module to deliver seamless, uninterrupted power to critical server components, even in the event of a single-module failure. This capability is essential for databases, virtualization hosts, and other workloads where uptime is non-negotiable.

• Chassis-optimized compatibility and efficiency. The PWS-741P-1R is designed to integrate with Supermicro backplanes and server chassis that support hot-swappable power modules. It contributes to reduced thermal load and energy consumption in data centers, supporting efficient cooling and lower total cost of ownership. The module is built with quality components and protection features that help prevent damage from short circuits, overloads, and unexpected power events, preserving the health of both the PSU and the host system.

Technical Details of Supermicro PWS-741P-1R Power Module

• Model: PWS-741P-1R
• Power Rating: 740 W
• Input Voltage: 110 VAC or 220 VAC (dual-range)
• Input Frequency: 50/60 Hz
• Configuration: Hot-swappable, redundancy-ready 1R design
• Interface: Backplane compatibility with compatible Supermicro chassis
• Application: Enterprise servers, data centers, high-availability environments

How to install Supermicro PWS-741P-1R Power Module

• Step 1: Power down the server following your data center’s procedures and disconnect the power cord. If your environment uses lockout-tagout protocols, apply them before handling hardware.
• Step 2: Open the chassis or access panel to locate the power module bay. Remove any fillers and verify that the backplane connectors are clean and accessible.
• Step 3: Align the PWS-741P-1R with the bay guides and slide it gently into the slot until it is seated securely. Do not force the connector; ensure proper engagement with the backplane.
• Step 4: Secure the module using the chassis retention mechanism or screws provided with your enclosure. If deploying a redundant pair, install the second module in the appropriate bay per your HA configuration.
• Step 5: Reconnect the AC power sources and power on the server. Use the chassis management interface or module LEDs to verify healthy operation and confirm that the module is recognized by the system.
• Step 6: Perform a lightweight power-on self-test (POST) and observe load balancing across available power paths. Validate that the server maintains stable operation under typical and peak loads and verify that no fault codes appear in the management software.

Frequently asked questions

• Q: What is the Supermicro PWS-741P-1R Power Module?
  A: It is a 740W, hot-swappable, redundant-ready power module designed for Supermicro servers, delivering reliable power delivery with flexible input options for varied data-center environments.
• Q: Does this power module support 110V and 220V input?
  A: Yes. The PWS-741P-1R supports dual-range input, allowing operation from 110 V AC or 220 V AC sources, depending on your facility configuration and regional standards.
• Q: Is the module hot-swappable?
  A: Yes. The design enables replacement or maintenance without powering down the host system in compatible chassis, reducing downtime and improving maintenance efficiency.
• Q: Can it be used in a redundant power configuration?
  A: Yes. The -1R designation indicates redundancy support; pairing two modules provides high-availability power to critical servers and workloads.
• Q: Which servers is it compatible with?
  A: It is intended for Supermicro servers and backplanes that list the PWS-741P-1R as a compatible power module. Always verify compatibility with your chassis model and Supermicro’s compatibility guides before purchasing.