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HP Flex Slot 800W Platinum server power supply, compact hot-plug module with matte metal finish

HP

HP 720479-B21 Flex Slot 800W Platinum server power supply

SKU CH-FQY2-3Z2PK

Hot-plug proprietary 800 W server power supply with 80 PLUS Platinum efficiency up to 94 % and Flex Slot form factor

  • Product typeProprietary Power Supply
  • 94% efficiency with 80 PLUS Platinum certification
  • 25% smaller form factor adds server options
  • Tool-less hot-plug access speeds service
  • Supported across ProLiant DL300 Gen9 family
  • 800W proprietary Flex Slot power supply

HP Flex Slot 800W Platinum Server Power Supply

The HP 720479-B21 is a proprietary hot-plug power module designed for ProLiant DL300 Gen9 servers. It delivers 800 watts of redundant power in a compact form factor that is 25 percent smaller than previous units, freeing internal space for additional server options.

80 PLUS Platinum Efficiency Limits

The supply operates at up to 94 percent efficiency under the 80 PLUS Platinum standard, reducing power waste and lowering overall data centre energy requirements. Its Flex Slot interface is proprietary to HP and not compatible with standard ATX or other redundant form factors.

800 Watt Output Determines Fit

The single specification that decides suitability is the 800 watt rated output, which must match the server configuration power budget. Builders needing 1400 watt capacity or Power Discovery Services support require the higher-rated Platinum Plus option instead.

How it compares

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

Price $47.99
Cheaper than about 87% of the 3,798 comparable items (median $131.99).

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Specifications

Product
Product typeProprietary Power Supply

Questions about this item

Which Flex Slot power-supply capacity should I choose for my ProLiant DL300 Gen9 server?

The 800 W Platinum unit covers typical single-socket workloads; the 1400 W Platinum Plus option is available if you need headroom for dual-socket configurations or future expansion.

What does the 94 % efficiency rating mean once the supply is installed in a rack?

At typical load the unit converts 94 % of AC input into usable DC power, so less electricity is wasted as heat and your data-centre cooling demand drops accordingly.

How does the Flex Slot interface limit what I can plug this supply into?

The proprietary Flex Slot form factor only fits HP ProLiant DL300 Gen9 servers and compatible Flex Slot bays; it will not work in standard ATX or other vendor chassis.

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