320W Redundant Hot-Plug Power Supply for PowerEdge 4300 4400 6300 6400

This 320W hot-plug server power supply is designed for compatible PowerEdge 4300, 4400, 6300, and 6400 systems using the matching redundant power-supply distribution or paralleling board. It installs as a removable PSU module with an integrated cooling fan, carrying handle, release mechanism, status indicators, and direct connection to the server power backplane. 

• Primary Part Number: 6188R
• Product Type: Redundant hot-plug server power supply unit
• Maximum Output Power: 320W per power supply
• AC Input Voltage: 100–240V AC
• AC Input Current: 5A maximum on documented EP071298 and EP071350 units
• Input Frequency: 47–63Hz on documented production labels
• Documented +12V Output: 16A
• Documented +5V Output: 40A
• Documented +3.3V Output: 18A
• Documented -12V Output: 0.5A
• Documented -5V Output: 0.3A
• Documented +5VFP Output: 0.4A
• Power-Supply Design: Proprietary removable server PSU module
• Redundancy Support: Supported in compatible multi-PSU server configurations
• Hot-Plug Capability: Yes, when the server has a functioning redundant power configuration
• System-Side Connector: Integrated proprietary backplane connector
• External AC Connector: IEC C14 appliance inlet
• Required Cord Connector: IEC C13
• Cooling: Integrated rear cooling fan
• Controls and Indicators: Carry handle, release mechanism, and PSU status indicator lights
• Cable Design: No attached internal output cables; power is delivered through the server backplane
• Installation Location: Rear hot-plug power-supply bay
• AC Power Cord: Sold separately unless specifically shown or stated

Interchangeable / Replacement Part Numbers

6188R, 06188R, 7390P, 07390P, 0007390P, 88806, 088806, 00088806, EP071298, EP071350

⭐ Recommended 5120P AC Power Cord — Sold Separately

Each installed power-supply module requires its own grounded AC power cord. For North American 125V outlets, use the 5120P 6FT 125V NEMA 5-15P to IEC C13 Power Cord.

The IEC C13 end connects to the PSU’s IEC C14 inlet. Order one cord for each installed PSU requiring a separate AC connection.

✅ Confirmed Compatibility

Compatibility requires a server configured for this exact 320W hot-plug PSU family and the corresponding power-distribution or paralleling board. Verify the original DP/N, manufacturer model, revision, backplane connector, module rails, latch, and server power configuration before ordering.

✔️ PowerEdge 4300: Compatible 320W hot-plug and redundant-power configurations using the matching PSU bay and power-supply paralleling hardware. Documented systems use two or three 320W supplies, with three supplies required to maintain redundancy.
✔️ PowerEdge 4400: Compatible 320W configurations using the matching power-supply distribution board. Two supplies are standard, and a third supply can be installed to provide redundancy.
✔️ PowerEdge 6300: Compatible 320W hot-plug configurations using the matching power-supply paralleling board. A minimum of two supplies is required to operate the server, while three supplies provide redundancy.
✔️ PowerEdge 6400: Compatible 320W hot-plug configurations using the matching power-distribution hardware. Each supply is rated at 320W, with a documented maximum shared output of 640W across the three-supply configuration.

☑️ Key Features

☑️ 320W removable server power-supply module
☑️ Hot-plug service capability in correctly configured redundant systems
☑️ Direct backplane connection with no loose internal output cables
☑️ Integrated cooling fan and protective metal enclosure
☑️ Carry handle and release mechanism for rear-bay installation and removal
☑️ Integrated status indicator lights for basic PSU condition reporting
☑️ Universal 100–240V AC input support
☑️ Replacement-family coverage for PowerEdge 4300, 4400, 6300, and 6400 servers
☑️ Compatible 5120P six-foot North American AC power cord available separately

⚙️ Fit Notes

• Match the original DP/N and manufacturer model whenever possible, especially when replacing only one supply in a multi-PSU system.
• The five-character DP/N and its leading-zero label forms identify the same reference, including 7390P / 07390P / 0007390P and 88806 / 088806 / 00088806.
• The listed rail ratings are documented on EP071298 and EP071350 production labels. Label formatting may vary by revision; confirm the 320W rating, complete module label, connector, and server configuration.
• EP071298 and EP071350 are replacement-family equivalents but different production revisions. A historical field report describes a fault indication when an EP071350 was mixed with existing EP071298 units in a PowerEdge 4300. For the lowest mismatch risk, use supplies with matching manufacturer models and revisions in the same server.
• Do not confuse the original PowerEdge 4300, 4400, 6300, or 6400 with later R430, R440, R630, R640, DL4300, or C6400 systems. Those later systems use entirely different power supplies.
• This is not a standard desktop ATX power supply. It connects directly to proprietary server power-distribution hardware and has no attached motherboard or drive-power cables.
• Confirm that the server has the correct hot-plug PSU cage, rails, and distribution or paralleling board. Similar wattage or exterior dimensions alone do not establish compatibility.
• Hot-plug replacement should only be performed while the remaining supplies can support the server and redundancy is functioning. If the configuration is unknown or the system has already lost redundancy, shut down the server before replacement.
• Never remove the last operating power supply from a powered server.
• The PowerEdge 4300 and 6300 use three supplies to provide redundancy. The PowerEdge 4400 supports a third supply to make its standard two-supply configuration redundant.
• PowerEdge 6400 documentation specifies 320W per supply and 640W maximum shared output. Three installed 320W modules do not provide 960W of usable system power.
• Each installed PSU should have its own correctly rated AC connection. Disconnect the cord from the specific module before removing that PSU.
• For North American outlets, the recommended DP/N 5120P cord provides a NEMA 5-15P wall plug and IEC C13 equipment connector. Use an appropriately approved regional IEC C13 cord outside North America.
• The AC power cord is not included unless shown or specifically stated in the product listing.
• Slide the module straight into the PSU bay until the backplane connector is fully seated and the retention mechanism locks. Never force a misaligned module.
• After installation, verify normal status-indicator behavior and confirm that the server no longer reports a PSU fault or loss of redundancy.