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865434-B21
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800W FS 48VDC HT PLG LH PWR SPLY KIT PL=SI
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Hand-picked by our procurement team for standout value. This unit is offered at our sharpest price on current stock, verified against live market rates.
Name:
865434-B21
- Description:
- 800W FS 48VDC HT PLG LH PWR SPLY KIT PL=SI
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Hpe
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
- Warranty:
- 3
- List Price:
$652.00
- Price:
$304.0053.4% off
Quantity:
1
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865434-B21 Overview
865434-B21 is a 650W power supply designed for high performance and reliability. It features a semi-modular design in an ATX form factor with an 80 PLUS Gold certification, operating at an input voltage of 100–240V and incorporating Active PFC for enhanced power efficiency. The unit is engineered with a 120mm fan using Fluid Dynamic bearing technology to ensure effective cooling while maintaining low noise levels.
865434-B21 is built with high-quality sleeved cables that contribute to its robust build quality and smooth power delivery. Offering essential protections such as OCP, OVP, UVP, and OTP, it provides reliable safety under load. The power supply connects via one ATX 24-pin, one CPU EPS 4+4 pin, two PCIe (6+2) connectors, six SATA power connectors, and four Molex connectors, making it well-suited for gaming, workstation, and professional server use.
865434-B21 price is $304.00, a 53.4% saving from the Hpe list price of $652.00. 865434-B21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for 865434-B21 for additional pricing. Browse the full Hpe Power Supplies series or explore all Hpe products.
865434-B21 Specifications
- Product Type
- Power Supply
- Brand
- Hpe
- Wattage
- 650W
- Use Case
- Gaming
- Form Factor
- ATX
- Modularity
- Semi-Modular
- 80 PLUS Certification
- Gold
- Rail Configuration
- Single Rail
- Certifications
- 80 PLUS / CE / FCC / UL / ROHS
- Remote Monitoring
- No
- Input Voltage
- 100–240V
- Hot-Swap Capable
- No
- PFC (Power Factor Correction)
- Active PFC
- Fan Size
- 120mm
- Fan Bearing Type
- Fluid Dynamic
- Zero RPM Mode
- Yes
- Efficiency Rating
- 92%
- Protections
- OCP / OVP / UVP / OTP
- ATX 24-Pin Connectors
- 1
- EPS (CPU) 4+4 Pin
- 1
- PCIe (6+2) Connectors
- 2
- SATA Power Connectors
- 6
- Molex Connectors
- 4
- Floppy Connector
- No
- Cable Type
- Sleeved
- RGB Lighting
- No
- MTBF (Mean Time Between Failures)
- 150,000 hours
- Operating Temperature
- 50°C
- Product Name
- 865434-B21 Ultra Efficiency Semi-Modular ATX Power Supply
- Height
- 5.1 inches
- Width
- 6.3 inches
- Depth
- 5.9 inches
- Weight
- 4.5 lbs
865434-B21 Use Case
High-Density Data Center Power Redundancy with 48VDC 800W Hot-Plug Supply
In a Fortune 500 enterprise data center deploying HP ProLiant Gen10 servers in ultra-dense rack layouts, the 865434-B21 800W FS 48VDC HT PLG LH power supply kit delivers left-hand hot-swappable redundancy. This Platinum-efficiency module supports N+1 resilience, achieves 99.999% infrastructure uptime and cuts energy expenses by up to 20%, while enabling live replacement without service interruption.
Edge Telecom Site Resilient Power for 5G Remote Radio Heads
A leading telecom operator powering 5G remote radio heads at edge cell-site shelters integrates the 865434-B21 800W 48VDC hot-plug kit into its DC bus architecture. The Platinum-rated supply maintains stable 48V output in extreme temperatures, delivers up to 800W peak, and permits on-the-fly module swaps—ensuring continuous signal coverage, reduced OPEX via high-efficiency conversion, and simplified field maintenance.
Industrial Automation Control Rack 48VDC Stable Power Supply
In an automotive assembly plant’s control room, programmable logic controllers (PLCs) and SCADA systems rely on the 865434-B21 800W FS 48VDC HT PLG LH power supply kit for reliable DC distribution. This plug-and-play, Platinum-efficient unit minimizes cooling load by 15%, extends MTBF, and provides hot-swap capability—eliminating planned downtime, reducing TCO and ensuring uninterrupted production line operations.
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Product Comparison Table 
| 865434-B21 |  J2R09A |  798349-B21 |  814835-B21 |  865438-B21 | |
|---|---|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Wattage | 650W | 650W | 750W | 850W | 750W |
| Use Case | Gaming | Gaming / Workstation / Server | Gaming | Gaming / Workstation | Enterprise Server / Workstation / Gaming |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Modularity | Semi-Modular | Modular | Modular | Modular | Modular |
| 80 PLUS Certification | Gold | Gold | Gold | Gold | Gold |
| Rail Configuration | Single Rail | Single Rail | Multi Rail | Single Rail | Single Rail |
| Certifications | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / CB / RoHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC |
| Remote Monitoring | No | No | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | 100–240V |
| Hot-Swap Capable | No | No | No | No | No |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Fan Size | 120mm | 120mm | 120mm | 120mm | 120mm |
| Fan Bearing Type | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic |
| Zero RPM Mode | Yes | Yes | Yes | Yes | Yes |
| Efficiency Rating | 92% | 94% | 92% | 94% | 94% |
| Protections | OCP / OVP / UVP / OTP | OCP / OVP / SCP | OCP / OVP / SCP / OTP | OCP / OVP / SCP | OCP / OVP / UVP / SCP / OTP |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| EPS (CPU) 4+4 Pin | 1 | 2 | 1 | 1 | 1 |
| PCIe (6+2) Connectors | 2 | 2 | 2 | 2 | 2 |
| SATA Power Connectors | 6 | 6 | 6 | 6 | 6 |
| Molex Connectors | 4 | 4 | 2 | 4 | 3 |
| Floppy Connector | No | No | No | No | No |
| Cable Type | Sleeved | Sleeved | Sleeved | Sleeved | Sleeved |
| RGB Lighting | No | No | No | No | No |
| MTBF (Mean Time Between Failures) | 150,000 hours | 150,000 hours | 120,000 hours | 150,000 hours | 150,000 hours |
| Operating Temperature | 50°C | 50°C | 50°C | 50°C | 50°C |
| Product Name | 865434-B21 Ultra Efficiency Semi-Modular ATX Power Supply | J2R09A Ultra Performance PSU | 798349-B21 High Performance Power Supply | 814835-B21 High Performance ATX Power Supply | 865438-B21 High Performance ATX Power Supply |
| Height | 5.1 inches | 5 inches | 5.5 inches | 5.4 inches | 5.0 inches |
| Width | 6.3 inches | 5.9 inches | 5.9 inches | 5.9 inches | 6.3 inches |
| Depth | 5.9 inches | 6.3 inches | 7.1 inches | 8.4 inches | 5.9 inches |
| Weight | 4.5 lbs | 6.5 lbs | 4.5 lbs | 4.8 lbs | 8.5 lbs |
Compliance & Coverage
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
S
Samuel Wright
4
48VDC PSU delivered consistent performance.
A
Ammar Yasin
5
Worked perfectly in telecom setup.
I
Ian McLeod
4
OEM fit and finish were excellent.
N
Naveed Hassan
4
Reliable for DC-powered environments.
K
Klaus Richter
4
Strong and stable output.
Questions & Answers
What is the power output and input voltage of the 865434-B21 power supply kit?
The 865434-B21 delivers a maximum of 800 W DC output with a 48 VDC input for high-performance systems.
Which servers are compatible with SKU 865434-B21?
This kit is compatible with HPE servers that use a 48 VDC Flex Slot hot-plug power supply, including HPE BladeSystem c-Class and select Apollo and ProLiant SL models—see HPE QuickSpecs for a full list.
Does the 865434-B21 support hot-swappable operation?
Yes, the 865434-B21 features hot-plug capability, allowing you to replace or install it without shutting down the system.
Is this power supply designed for high-temperature environments?
Yes, it supports extended ambient operating temperatures up to 60 °C, ensuring reliable performance in harsh conditions.
What efficiency rating does the 865434-B21 power supply have?
It carries a Platinum Plus efficiency rating, delivering over 94 % efficiency at 50 % load to minimize energy loss.
What connectors and accessories are included in the kit?
The kit includes the left-hand 48 VDC plug, DC power cable, mounting bracket and all required installation hardware.
How do I install the 865434-B21 power supply kit?
Slide the module into the Flex Slot bay until it latches, connect the 48 VDC cable, and verify LED indicators against the Quick Start Guide.
Can I use the 865434-B21 in redundant power configurations?
Yes, it supports N+1 redundancy when installed alongside compatible 48 VDC power modules in the same chassis.
What warranty does the 865434-B21 come with?
HPE backs this power supply kit with a one-year limited warranty and global replacement service.
What certifications and safety standards does this unit meet?
The 865434-B21 complies with UL, CE, RoHS and EN55032 standards for safety, electromagnetic emissions and environmental protection.
Can I upgrade from a lower-wattage DC power supply to the 865434-B21?
Yes, simply remove the existing 48 VDC module and install the 800 W 865434-B21 to increase system power capacity.
How do I troubleshoot power supply errors on the 865434-B21?
Check the front-panel LED status, consult the error code table in the user manual and follow the recommended corrective actions.
What are the dimensions and weight of the 865434-B21?
It measures 234 × 40 × 115 mm (L × W × H) and weighs approximately 1.5 kg for easy handling and installation.
Are spare parts or replacements available for this power supply kit?
Yes, you can purchase individual DC cables, fan modules and power modules through HPE Spare Parts using their corresponding SKUs.
Where can I purchase the SKU 865434-B21 power supply kit?
Order directly from HPE’s official store, authorized HPE resellers or certified online marketplaces.
What safety precautions should I observe during installation?
Disconnect all input power, use proper ESD protection, and follow the steps outlined in the HPE Service Manual.
How does the 865434-B21 contribute to energy efficiency in data centers?
Its Platinum Plus efficiency reduces power waste, lowers cooling requirements and decreases overall operational costs.