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Rectangular silver 1U server power supply unit with rear fan grille and power socket

Supermicro

Supermicro PWS-1K21P-1R 1200 W server power supply

SKU CH-7HJX-258AZ

Rack-mountable 1200 W server power supply with 80 PLUS Gold efficiency, 100-240 V input and 1U form factor for compatible Supermicro chassis

  • 1200 W output powers dense server builds
  • 80 PLUS Gold efficiency cuts energy waste
  • 100-240 V AC input works worldwide
  • 1U rack form factor fits standard chassis

1200 W rack-mount server PSU

The Supermicro PWS-1K21P-1R delivers 1200 W from a 1U form factor with 80 PLUS Gold efficiency. It accepts AC input from 100 to 240 V and includes active power factor correction. The unit is built for continuous duty in enterprise environments.

Compatible with listed Supermicro chassis

This supply fits A+ Server 2021 systems plus SC745, SC80X, SC82X, SC836, SC846 and SC936 chassis. It also serves SuperServer 1026 and 6016 platforms. Builders using other cases or requiring redundant modules should verify mechanical and electrical compatibility before purchase.

Highlights

  • 1200 W output powers dense server builds
  • 80 PLUS Gold efficiency cuts energy waste
  • 100-240 V AC input works worldwide
  • 1U rack form factor fits standard chassis

Specifications

BrandSuperMicro
ModelPWS-1K21P-1R

Questions about this item

What is the 80 PLUS Gold rating of the PWS-1K21P-1R?

The unit carries an 80 PLUS Gold certification, indicating high efficiency across typical server load ranges.

How loud does the internal fan get under continuous full load?

The 1U form factor uses a high-speed internal fan that will be audible in a quiet room when the supply runs at 1200 W for extended periods.

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