PWS-1K81P-1R Supermicro Active 1800W 1U PSU

High-Density 1U Hot-Swap Server Power Supply Module for Redundant Platforms with the PWS-1K81P-1R

The PWS-1K81P-1R is a Supermicro 1U AC hot-swap PSU module designed to restore or expand power capacity in compatible rack chassis while maintaining service continuity. With 1800W output and 100–240V auto-ranging input, it supports high-density 1U platforms where power headroom is required for CPU-heavy configurations, accelerator-ready nodes, and storage-dense builds that increase transient load.

Architecturally, the PWS-1K81P-1R underpins stable operation of modern CPU and PCIe expansion topologies by ensuring consistent power delivery under variable utilization. Its 80 PLUS Platinum efficiency reduces wasted energy and thermal load, helping optimize rack-level cooling and improving overall data centre power budgeting. Integrated active cooling supports predictable airflow behavior inside 1U enclosures, aligning with front-to-back thermal design and allowing standardized maintenance procedures across fleets.

Why Choose the PWS-1K81P-1R?

The PWS-1K81P-1R is selected for enterprise deployments that require fast serviceability, high wattage in 1U, and a clear path to redundant power configurations in compatible Supermicro chassis. By enabling hot-swap replacement and consistent power behavior, the PWS-1K81P-1R supports higher availability targets, simplifies sparing strategy, and reduces operational risk during maintenance windows.

Supermicro designs power subsystems for continuous data centre operation, focusing on mechanical fit, electrical stability, and platform-level validation. The PWS-1K81P-1R reflects this approach through standardized 1U module engineering, efficiency alignment with modern rack power standards, and integration that supports repeatable deployment at scale.

Key Applications:

• 1U rack server PSU replacement and spares
• Redundant power supply configurations
• High-density CPU compute nodes
• PCIe expansion and accelerator-ready platforms
• Storage-dense 1U systems

At Happyware - Server Hardware you benefit from non-binding offers tailored precisely to your PWS-1K81P-1R deployment and an extended warranty option up to 6 years to secure long-term availability planning for critical 1U server fleets.