HPE 500W 80+ Platinum Flex Slot Hot-Swap Redundant Power Supply

P/N: HSTNS-PL40-1, 866729-001, 865398-001, 865408-B21, PS-2501-3CH, 865399-201

The HPE 500W 80+ Platinum Flex Slot Power Supply is a high-efficiency, enterprise-grade hot-plug PSU designed for HPE ProLiant Gen9, Gen10, and Gen10 Plus servers. Delivering up to 94% efficiency, it reduces power consumption and heat output while supporting redundant configurations for maximum uptime in data center environments.

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Part Number Identification

• Option P/N: 865408-B21

• Spare P/N: 866729-001

• GPN: 865398-001

• Assembly P/N: 865399-201

• Model Numbers: HSTNS-PL40-1, PS-2501-3CH

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Key Specifications

Attribute	Specification
Power Output	500 Watts / 563 VA
Efficiency Rating	80 PLUS Platinum (up to 94% efficiency)
Form Factor	HPE Flexible Slot (Flex Slot), Plug-in Module
Input Voltage	100–240V AC
Input Frequency	50–60 Hz
Input Connector	IEC 60320 C14
Cooling	Active Fan
Power Factor Correction	Integrated
Halogen Status	Low Halogen
Dimensions (H x W x D)	1.6 × 2.7 × 8.9 in (4.06 × 6.86 × 22.61 cm)
Weight	Approx. 32.1 oz (910 g)
Operating Temp	41°F to 131°F (5°C to 55°C)

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Key Features

• Hot-Plug / Redundant Design – Replace power supplies without shutting down the server

• High Efficiency (Platinum Rated) – Up to 94% efficiency at 50% load

• Flex Slot Design – 25% smaller than previous HPE power supplies

• Optimized for Data Centers – Reduces power usage and operating costs

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Compatibility

HPE ProLiant DL Series (Rackmount)

Gen9 Servers

• DL360 Gen9

• DL380 Gen9

• DL388 Gen9

Gen10 & Gen10 Plus Servers

• DL20 Gen10

• DL120 Gen10

• DL160 Gen10

• DL180 Gen10

• DL325 Gen10 / Gen10 Plus / Gen10 Plus V2

• DL345 Gen10 Plus

• DL360 Gen10 / Gen10 Plus

• DL365 Gen10 Plus

• DL380 Gen10 / Gen10 Plus

• DL385 Gen10 / Gen10 Plus

• DL388 Gen10

• DL560 Gen10

• DL580 Gen10

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HPE ProLiant ML Series (Tower)

Gen9

• ML350 Gen9

Gen10 & Gen10 Plus

• ML30 Gen10

• ML110 Gen10

• ML350 Gen10

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Other Compatible Systems

HPE Blade Systems

• BL460c Gen10

HPE Apollo Systems

• Apollo 2000 Gen10

• Apollo 4500 Gen10

HPE Cloudline & Storage

• Cloudline CL2600 Gen10

• Cloudline CL2800 Gen10

• Nimble Storage dHCI Solutions

• StoreEasy 1000 Storage

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Ideal Use Cases

• Enterprise data centers

• Redundant power configurations

• Virtualized and high-availability environments

• Energy-efficient server deployments