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Rectangular silver metal server power supply unit with rear vent grille and side handle, new condition

HPE

HPE 656364-B21 1200W server power supply

SKU CH-BG04-96X37 MPN 656364-B21

Delivers 1200W of 94% efficient power with hot-plug installation for compatible HPE servers

  • Max wattage1200 W
  • Power efficiency94%
  • Power supply redundancySingle
  • Supply voltage100–240 V
  • AC input frequency50/60 Hz
  • Product typeConsumer Electronics
  • 94% Platinum efficiency reduces energy waste
  • 1200W maximum output powers demanding server workloads
  • Hot-plug design enables replacement without system downtime
  • 100-240V input voltage supports global deployment
  • Compact 1.5" x 3.4" x 7.5" form factor fits Common Slot bays

1200W Common Slot Platinum power supply

This 1200 watt hot-plug unit fits HPE Common Slot bays and delivers platinum-rated efficiency for rack servers and storage arrays. It is built for administrators who need redundant-ready power in a tool-less form factor.

Sustained load efficiency and hot-swap operation

At 94 percent efficiency the supply wastes less energy and generates less heat during continuous operation. The hot-plug design lets technicians replace the module without shutting down the host system.

Single 1200W output for Common Slot bays

The kit provides a single 1200 watt output rated for 100 to 240 volt input at 50 or 60 hertz. Buyers who need multiple redundant units or a different wattage should verify chassis limits before ordering.

How it compares

Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.

Price $299.99
Pricier than about 83% of the 3,798 comparable items (median $131.99).
Max wattage 1200 W
Higher than about 80% of the 235 comparable items (median 668 W).

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Specifications

Product
Brand nameHP
Model name656364-B21
Product typeConsumer Electronics
Power
Max wattage1200 W
Power efficiency94%
Power supply redundancySingle
Supply voltage100–240 V
AC input frequency50/60 Hz
Size & build
Product dimensions1.5 in × 3.4 in × 7.5 in
Product weight3 lb (1.36 kg)
Shipping weight1.81 kg
Package size229 × 127 × 76 mm

Questions about this item

How much heat and fan noise does the 1200 W platinum supply generate when running continuously?

At 94 % efficiency only about six percent of the 1200 W draw becomes waste heat, so the internal fan stays relatively quiet even under sustained load.

What server chassis and backplane must I already have for this Common Slot unit to fit and power up?

It requires an HPE server or storage enclosure with a Common Slot bay and the matching power backplane that accepts hot-plug CS supplies.

Will the 656364-B21 share a load with older Common Slot supplies already installed in my rack?

Yes, the Common Slot design allows mixed-wattage CS supplies to operate together in the same chassis for redundant or combined power.

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