PWS-781-1S Supermicro Active 780W 1U Server PSU

High-Efficiency 1U Server Power Supply Module for Single-PSU Platforms with the PWS-781-1S

The PWS-781-1S is a 780W 1U AC power supply module engineered for Supermicro server platforms where a single-PSU architecture is operationally acceptable. In general-purpose compute and storage nodes, the PWS-781-1S provides stable DC output from 100–240V AC input with active PFC, supporting consistent power delivery across mixed rack power domains.

Designed for replacement and sparing strategies, the PWS-781-1S aligns with dense 1U deployments that prioritize predictable power behavior and controlled service procedures. Fixed cable management simplifies internal airflow planning and reduces variability during maintenance, while the active design supports efficient conversion and improved power-factor performance under typical data centre load profiles.

Why Choose the PWS-781-1S?

The PWS-781-1S offers a clear density-to-power profile for 1U systems that do not require PSU redundancy, enabling straightforward capacity planning and repeatable build standards. By standardizing on the PWS-781-1S for compatible Supermicro chassis, IT teams can minimize platform variance, streamline spares holdings, and keep power characteristics consistent across node pools and edge racks.

Supermicro designs power subsystems around pragmatic serviceability and data centre fit, focusing on predictable electrical behavior, validated platform interoperability, and long-term availability for enterprise lifecycle management. This engineering approach supports standardized operations across heterogeneous server fleets and modern facility power standards.

Key Applications:

• Replacement PSU for 1U Supermicro servers
• General-purpose compute nodes
• Storage and backup appliances
• Lab, staging, and edge deployments

At Happyware - Server Hardware you benefit from non-binding offers tailored precisely to your needs and the option to extend the warranty up to 6 years, supporting controlled procurement and long-term operational security for PWS-781-1S deployments.