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Rectangular silver plug-in module with HP branding and power connector

HP

HP 515739-B21 400W AC Power Supply Switch Module

SKU CH-6YS4-W0ERY

400W AC power supply module compatible with HP ProLiant DL320 G6 servers

  • Plug typeProprietary Power Supply
  • 400 W output powers the HP ProLiant DL320 G6 Server
  • Plug-in module form factor allows direct installation in the server chassis
  • Proprietary power supply design ensures correct voltage delivery for the HP ProLiant DL320 G6 Server
  • New condition guarantees full rated performance from first use
  • HP 515739-B21 part number confirms exact compatibility with the HP ProLiant DL320 G6 Server

HP 515739-B21 400W AC Power Supply

The HP 515739-B21 is a 400 W AC power supply designed as a plug-in module for the HP ProLiant DL320 G6 Server. It delivers 400 W of output power through a proprietary electrical outlet plug type. This new component serves as a direct replacement or spare unit for maintaining server uptime in compatible rack environments.

Proprietary form factor and server integration

The plug-in module form factor allows tool-less installation directly into the server chassis, securing both power delivery and physical alignment without external cabling. Because the unit uses a proprietary connector, it cannot be adapted for use in standard ATX chassis or third-party equipment. The 400 W rating matches the original specification for the supported platform.

Suited for DL320 G6 maintenance.

This module suits IT teams maintaining HP ProLiant DL320 G6 servers who need a verified 400 W replacement. It does not fit other ProLiant generations, non-HP servers, or custom workstations lacking the proprietary slot and connector. Buyers needing redundant power for different hardware should look elsewhere.

How it compares

Measured against everything we stock in Switch Modules, Transceivers & Add-Ons, at today’s prices. Recalculated every night.

Price $76.99
Typical for this category: the median of 1,517 items is $68.99.

Specifications

Product
Brand nameHP
Power
Plug typeProprietary Power Supply

Questions about this item

Will the internal fan in the 515739-B21 module need replacement after extended operation?

The fan is built into the plug-in module; when it wears out the entire 400 W power supply is swapped rather than servicing the fan alone.

What is the maximum continuous output the 400 W unit can sustain in a ProLiant DL320 G6?

The supply is rated for 400 W total output; sustained loads above that level will trigger the built-in protection circuit.

How much heat and noise does the 515739-B21 produce when the server runs all day?

As a 400 W plug-in module it exhausts waste heat through the server chassis fans; acoustic output follows the host system’s fan profile.

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