Power Supply Unit Supermicro PWS-1K02A-1R 800W 1U Metallic

The Supermicro PWS-1K02A-1R 800W 1U Metallic is a compact server power supply engineered for 1U rack systems. It delivers a continuous 800W output with the capability to reach peak output up to 1000W, while fitting into a narrow 1U chassis. The unit is built with an all-metal enclosure and supports a wide AC input range of 100–240 V and 50–60 Hz operation. Designed for data center and enterprise environments, it includes active power factor correction and 80 PLUS Titanium-level efficiency to reduce energy losses and improve thermal performance. Remote monitoring and management are available through PMBus 1.2 support, and the design permits flexible redundancy configurations for mission-critical systems.

Advantages

This power supply combines a small 1U form factor with high efficiency and thermal stability. The 80 PLUS Titanium certification and active PFC help lower energy consumption and heat generation under varying loads. PMBus 1.2 support enables remote monitoring of voltage, current and power parameters, simplifying systems management. The metallic construction and proven Supermicro components are intended to ensure robust mechanical reliability in rack-mounted servers.

Suitable for

• 1U rackmount servers and dense blade enclosures where space is limited
• Enterprise and data center deployments requiring high efficiency and reduced power loss
• Systems that need remote power monitoring and management via PMBus
• Redundant power configurations in mission-critical server installations

When it may not be suitable

This PSU is specifically sized for 1U server chassis and may not fit larger or non-standard enclosures that require different mounting formats. It is optimized for server-class applications and may be unnecessarily specialized for basic desktop PCs or low-power consumer devices.

Key specifications

• Continuous output power: 800 W
• Peak output power capability: up to 1000 W
• Form factor: 1U, compact metallic enclosure
• AC input voltage range: 100–240 V
• Frequency: 50–60 Hz
• Input current range: designed for typical 5–9.8 A operation depending on input voltage
• Efficiency rating: 80 PLUS Titanium
• Power Factor Correction: active PFC
• Management interface: PMBus 1.2 support for remote monitoring and control
• Dimensions (W x D x H): 73.5 mm x 203 mm x 40 mm

How to use

Install the power supply into a compatible Supermicro 1U chassis or another server frame designed for this form factor, ensuring secure mechanical seating and correct connector alignment. Connect AC mains of appropriate voltage within the 100–240 V range and verify that rack power distribution and breakers are correctly rated for expected current. If using remote monitoring, connect the PMBus interface to the server management controller and configure monitoring parameters according to system documentation. For redundant setups, follow the server or chassis guidelines to implement N+1 or other redundancy topologies and verify failover behavior under test conditions.

What to consider before purchase

• Confirm physical compatibility with your 1U chassis or server rail system and clearance for the unit dimensions
• Verify your server’s power connector types and wiring match the PSU outputs and chassis harness
• Ensure your rack power distribution and breakers support the input current at your site voltage
• Check whether PMBus-based remote monitoring is required and compatible with your management system

Usage recommendations

For reliable operation, avoid continuous operation at peak output for extended periods; aim for typical loads below the continuous 800 W rating. Maintain adequate airflow in the 1U chassis, monitor inlet temperatures, and use the PMBus interface to track power and thermal metrics. In redundant configurations, periodically test failover to confirm that the remaining unit covers the required load.