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Rectangular silver server PSU with 46-pin connector visible

Supermicro

Supermicro PWS-1K28P-SQ 12V 83A power supply

SKU CH-7DNE-V7JVN MPN PWS-1K28P-SQ

Delivers 12 V at 83 A with a 46-pin connector in a 2.99" x 1.57" x 14.17" redundant form factor

  • Main power connector46pin
  • Output type/83A, 5 V Standby@4A
  • Product dimensions2.99 in × 1.57 in × 14.17 in
  • 12V rail delivers 83A for high-density server loads
  • 5V standby rail supplies 4A for baseboard management
  • 46-pin main connector enables direct backplane integration
  • Compact 2.99" x 1.57" x 14.17" form factor fits 1U chassis
  • New condition ensures full factory specification and reliability

High-density server power supply

The Supermicro PWS-1K28P-SQ delivers 12V output at 83A with a 5V standby rail at 4A. It uses a 46pin main connector and measures 2.99" x 1.57" x 14.17". This unit is built for dense server and storage deployments requiring high current in a compact form factor.

Hot-swap redundancy integration

The supply fits Supermicro 1U, 2U, 3U and 4U chassis and supports hot-swappable replacement. It works in redundant configurations such as 1+1+1, 1+2 or 2+2 setups alongside battery backup modules. The design frees internal space by matching the standard redundant AC supply footprint of 76W x 360D x 40.4H mm.

Mission-critical uptime focus

This product suits operators who need continuous power for critical workloads and can deploy matching Supermicro chassis. Buyers without compatible redundant bays or those needing different voltage rails should look elsewhere.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $181.99
Pricier than about 59% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Brand nameSuperMicro
Model namePWS-1K28P-SQ
Ports & slots
Output type/83A, 5 V Standby@4A
Power
Main power connector46pin
Size & build
Product dimensions2.99 in × 1.57 in × 14.17 in
Shipping weight2.27 kg
Package size406 × 127 × 102 mm

Questions about this item

How much 12 V current can the unit deliver continuously?

The supply provides 12 V at 83 A, giving 1000 W of main-output power.

What is the standby rail rating?

A 5 V standby rail rated at 4 A is included for baseboard management and wake functions.

What connector does the module use to mate with the chassis?

It uses a 46-pin connector that matches Supermicro redundant-supply backplanes.

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