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HPE 500W Flex Slot Platinum Hot Plug Low Halogen Power Supply Kit – 865408-B21
Key Features
Brand: HPE
Device Type: Power supply – hot-plug / redundant – plug-in module
Hewlett Packard Enterprise (HPE)
Specification Compliance: Flex Slot
80 PLUS Certification: 80 PLUS Platinum
Weight: 910 g
1 Year Warranty
HPE 500W Flex Slot Platinum Power Supply Kit Review: Enterprise Efficiency
The HPE 500W Flex Slot Platinum Hot Plug Low Halogen Power Supply Kit (865408-B21) delivers high-efficiency electrical conversion, consistent voltage regulation, and non-stop operational availability. Engineered specifically for enterprise ProLiant server environments, this original equipment manufacturer replacement component lowers datacenter power consumption while providing continuous uptime through hot-swappable redundancy configurations.
Executive Overview and Premium Design Philosophy
The HPE 865408-B21 power supply represents a core standard in energy management and hardware reliability for cloud platforms and high-availability enterprise environments. It transitions organizations from standard power configurations to a highly optimized, eco-conscious ecosystem. Designed for deployment in high-density ProLiant rack units, corporate branch offices, and distributed edge computing architectures, this original equipment component safeguards critical computational assets from grid fluctuations.
Engineered for Elite Professional Workflows
Continuous server uptime is an absolute requirement for modern corporate networks and edge computing platforms. This high-efficiency power supply facilitates this necessity by delivering highly regulated electrical currents directly to the server backplane. Systems can run deep data processing cycles and manage localized application traffic loads without experiencing sudden reboots or hardware crashes. The specialized architecture maintains steady efficiency across all load profiles, supporting long operations without performance drops.
Structural Integrity and Premium Aesthetics
Constructed with a heavy-duty galvanized steel enclosure and a durable polymer pull handle, this unit features a compact toolless form factor that drops seamlessly into the ProLiant rear power distribution bays. Unlike low-grade aftermarket power bricks, this premium replacement assembly features a heavy-duty card edge interface connector that reduces electrical resistance. The industrial design manages internal airflow paths efficiently using a high-velocity cooling fan, keeping your server rack operating quietly and cleanly.
Key Technical Specifications
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- Manufacturer Option Part Number: 865408-B21
- Maximum Output Wattage: 500 Watts continuous delivery capacity
- Energy Efficiency Rating: 80 Plus Platinum certified (up to 94 percent efficiency at half load)
- Compatible Server Models: HPE ProLiant DL360 Gen10, DL380 Gen10, ML350 Gen10, and Apollo Series
- Input Voltage Range Profile: 100 to 240 Volts alternating current compatibility
- Primary Interface Connection: Flex Slot proprietary gold-plated card edge connector
- Environmental Material Status: Low Halogen certification for reduced ecological footprint
- Cooling Fan Layout System: Integrated internal active cooling exhaust fan assembly
- Alternative Part Configurations: 865406-001, 865398-001, and HSTNS-PL40
Top Benefits of the HPE 500W Platinum Power Supply
80 Plus Platinum Certified Energy Preservation
This power supply meets strict international green energy targets by converting up to 94 percent of incoming AC electricity into usable DC power under standard workloads. Minimizing the amount of power wasted as ambient exhaust heat significantly lowers month-over-month utility bills and reduces structural facility cooling expenses.
Seamless Hot-Swappable Modular Redundancy
The module features a specialized toolless plug-and-play architecture that enables live data center maintenance. When configured in a dual-power setup, IT technicians can pull a failed module out and slide the new replacement unit into place without shutting down the operating system, preserving continuous business uptime.
Eco-Conscious Low Halogen Manufacturing
Engineered to adhere to strict corporate environmental safety guidelines, the internal component matrix is fabricated using low-halogen materials. This structural design choice minimizes toxic airborne emissions in the event of extreme component thermal overloads, protecting both datacenter staff and electronics infrastructure.
Integrated Visual Status LED Diagnostic Matrix
Engineered to work alongside the HPE Integrated Lights-Out (iLO) system interface, the module communicates its health metrics in real time. The rear of the unit features an integrated translucent status light bar that illuminates green during normal operation, flashes amber during faults, or remains dark if input power is lost, guiding technicians instantly.
Server Power Distribution Array Configuration Matrix
| Server Load Status | Active PSU Count Required | Redundancy Validation | Operational Behavior |
|---|---|---|---|
| Non-Redundant Mode | 1 Active Power Module | No Fault Tolerance | Total System Shutdown If the Single PSU Fails |
| Redundant Configuration | 2 Active Power Modules | Full 1+1 Redundancy Met | Secondary PSU Instantly Picks Up Load If Primary Fails |
Step-by-Step Hot-Swap Replacement Instructions
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- Locate the Target Slot: Check the rear of your server chassis to identify the failed power supply unit by looking for the amber fault LED light.
- Disconnect the Power Line: Unplug the primary AC power cord from the rear socket of the failed power unit and clear the safety strap.
- Release the Locking Clip: Press the quick-release plastic latch firmly to the side to unlock the internal card edge mechanism.
- Remove the Old Hardware: Grip the integrated handle loop firmly and pull the module straight out of the server bay channel.
- Slide and Seat the New Unit: Push the new 500W module straight into the empty bay slot until you hear the mechanical latch click securely into place.
Frequently Asked Questions
Can I mix a 500W power supply with an 800W or 1600W power supply in the same server?
No. Enterprise power architectures require matching power profiles to maintain stable power distribution. Mixing power supplies with different wattage levels or different efficiency ratings within the same server chassis will cause a configuration mismatch error and can prevent the system from booting up.
Does this power supply support high-voltage 240V datacenter grids?
Yes. This unit features an auto-ranging internal transformer that supports standard domestic 110V wall outlets as well as high-density 240V corporate server rack power distribution units. It automatically adjusts to incoming electrical currents without needing manual switch adjustments.
What is the advantage of the HPE Flex Slot physical form factor?
The Flex Slot design features a universal electrical and physical layout across multiple product generations. This common slot blueprint allows IT departments to normalize their spare parts inventory, lowering hardware overhead expenses since the same supply module fits various rack and tower servers.
