PWS-406P-1R Supermicro Active 400W 1U PSU

High-Efficiency 1U Redundant Hot-Swap AC Power Module with the PWS-406P-1R

The PWS-406P-1R is a Supermicro 1U redundant hot-swap AC PSU module engineered for qualified rack platforms that require consistent 400W delivery with serviceable, field-replaceable power. Designed for dense enterprise deployments, the PWS-406P-1R integrates a gold-finger output interface and PMBus 1.2 telemetry to support controlled power operations and hardware-level monitoring in managed data centre environments.

With 80 PLUS Gold efficiency up to 92% at peak and Active PFC, the PWS-406P-1R reduces conversion losses and improves power utilisation effectiveness in standardized racks. A +12V single-rail design (33A) supports modern CPU and PCIe device loads through the host system power distribution, while +5VSB maintains standby management continuity. Built-in protections (OVP, OCP, SCP) help safeguard system stability under fault conditions, making the PWS-406P-1R well aligned for redundant 1U architectures where uptime and predictable servicing drive design choices.

Why Choose the PWS-406P-1R?

The PWS-406P-1R delivers an enterprise-appropriate density-to-reliability profile for 1U redundant platforms, enabling rapid hot-swap replacement without extended maintenance windows. Its PMBus visibility supports operational scalability through consistent power telemetry across fleets, while validated compatibility helps streamline spares strategy for Supermicro deployments.

Supermicro designs power subsystems with a focus on platform qualification, component-level protection, and serviceability aligned to modern rack standards. This engineering approach supports repeatable integration, predictable behavior under load, and controlled lifecycle maintenance for production data centres.

Key Applications:

• Redundant 1U rack server power replacement
• Data centre PSU standardisation for qualified systems
• Field service and sparing programs
• Remote monitoring with PMBus telemetry

At Happyware - Server Hardware you benefit from non-binding offers tailored to your deployment and spare-part planning for the PWS-406P-1R, plus the option to extend warranty coverage up to 6 years to reduce operational risk in long-lived infrastructure.