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Sebastian K'nig
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Redundant fan cage improved cooling reliability immediately.
874572-B21
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HPE ML350 Gen10 Redundant Fan Cage Kit
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Name:
874572-B21
- Description:
- HPE ML350 Gen10 Redundant Fan Cage Kit
- Rating:
Added to cart 28 times recently
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In stock - Ready to Ship
- Brand:
- Hpe
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- Warranty:
- 3
- List Price:
$235.00
- Price:
$153.0034.9% off
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1
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874572-B21 Overview
874572-B21 is a Liquid (AIO) cooling solution featuring 2 fans sized at 120mm each, a 240mm radiator, and compatibility with Intel (LGA 1700) and AMD (AM4) sockets. It supports up to 180W TDP, operates at a noise level of 21–30 dBA, uses Fluid Dynamic bearings, includes pre-applied thermal paste, and boasts ARGB + Software Control RGB lighting.
This product is designed for gaming rigs, overclocking setups, and server cooling applications. Its fans are controlled via a 4-Pin (PWM) connector, ensuring efficient temperature management while providing high static pressure and airflow performance for demanding computing environments.
874572-B21 price is $153.00, a 34.9% saving from the Hpe list price of $235.00. 874572-B21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for 874572-B21 for additional pricing. Browse the full Hpe Server Cooling Solutions series or explore all Hpe products.
874572-B21 Specifications
- Weight
- 4.2 lbs
- Height
- 4.5 inches
- Width
- 9.0 inches
- Depth
- 3.5 inches
- Fan Size
- 120mm
- Product Type
- Cooling Solution
- Fan Speed Range
- 1500–2000 RPM
- Noise Level
- 21–30 dBA
- Airflow (CFM)
- 41–60 CFM
- Connector Type
- 4-Pin (PWM)
- Control Method
- PWM
- Mounting Hardware Included
- Yes
- Use Case
- Gaming / Overclocking / Server Cooling
- Bearing Type
- Fluid Dynamic
- Thermal Paste Included
- Yes
- Max TDP Support
- Up to 180W
- RGB Lighting
- ARGB + Software Control
- Fan Count
- 2
- Static Pressure
- High
- Compatible Sockets
- LGA 1700 / AM4
- Cooling Type
- Liquid (AIO)
- Radiator Size
- 240mm
- RGB Sync Compatibility
- ASUS Aura Sync
- Product Name
- 874572-B21 Liquid AIO CPU Cooler
874572-B21 Use Case
Data Center High-Availability Cooling for HPE ML350 Gen10 Servers
In a multi-rack data center powering critical business applications, the 874572-B21 Redundant Fan Cage Kit delivers N+1 cooling redundancy for HPE ML350 Gen10 servers. By automatically engaging backup fans on primary fan failure, it maintains optimal airflow and prevents thermal shutdowns—ensuring continuous uptime, reducing unplanned outages, and safeguarding service-level agreements.
Remote Branch Office Infrastructure Resilience
For distributed enterprises managing remote office IT closets without on-site technicians, the 874572-B21 kit provides hot-swappable fan modules for HPE ML350 Gen10 platforms. This plug-and-play solution minimizes maintenance visits and automates failover cooling, delivering consistent server performance, lower operating costs, and improved network availability in unattended environments.
High-Performance Compute Cluster Thermal Optimization
In compute-intensive research or virtualization clusters, the 874572-B21 Redundant Fan Cage Kit enhances thermal management for HPE ML350 Gen10 blades under peak load. By ensuring uninterrupted airflow and preventing thermal throttling, it maximizes CPU performance, extends component lifespan, and supports sustained high-density workloads with reliable, energy-efficient cooling.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 874572-B21 |  871246-B21 |  867810-B21 |  765654-B21 |  820290-B21 | |
|---|---|---|---|---|---|
| Product Type | Cooling Solution | Cooling Solution | Cooling Solution | Cooling Solution | Cooling Solution |
| Cooling Type | Liquid (AIO) | Air | Liquid (AIO) | Liquid (AIO) | Liquid (AIO) |
| Compatible Sockets | LGA 1700 / AM4 | LGA 1200 / AM4 | LGA 1200 / LGA 115x / AM4 / AM5 | LGA 115x / AM4 | LGA 1700 / LGA 1200 / LGA 115x / AM4 |
| Bearing Type | Fluid Dynamic | Sleeve | Ball | Fluid Dynamic | Fluid Dynamic |
| Use Case | Gaming / Overclocking / Server Cooling | Gaming / Overclocking / Server Cooling | Gaming / Overclocking / Server Cooling | Gaming / Overclocking / Server Cooling | Gaming / Overclocking / Server Cooling |
| Fan Count | 2 | 2 | 2 | 2 | 2 |
| Fan Size | 120mm | 120mm | 120mm | 120mm | 120mm |
| Radiator Size | 240mm | N/A | 240mm | 240mm | 240mm |
| Max TDP Support | Up to 180W | Up to 180W | Up to 150W | Up to 150W | 150W |
| Fan Speed Range | 1500–2000 RPM | 1500–2000 RPM | 2000–2500 RPM | 1500–2000 RPM | 1500–2000 RPM |
| Noise Level | 21–30 dBA | Up to 20 dBA | Up to 20 dBA | Up to 20 dBA | 21–30 dBA |
| Airflow (CFM) | 41–60 CFM | 41–60 CFM | 41–60 CFM | 41–60 CFM | 41–60 CFM |
| Static Pressure | High | High | High | Medium | Medium |
| Connector Type | 4-Pin (PWM) | 4-Pin (PWM) | 4-Pin (PWM) | 4-Pin (PWM) | 4-Pin (PWM) |
| RGB Lighting | ARGB + Software Control | ARGB + Software Control | ARGB + Software Control | Addressable RGB | ARGB + Software Control |
| RGB Sync Compatibility | ASUS Aura Sync | ASUS Aura Sync | Corsair iCUE | ASUS Aura Sync | Corsair iCUE |
| Control Method | PWM | PWM | PWM | Software | PWM |
| Thermal Paste Included | Yes | Yes | Yes | Yes | Yes |
| Mounting Hardware Included | Yes | Yes | Yes | Yes | Yes |
| Product Name | 874572-B21 Liquid AIO CPU Cooler | 871246-B21 High Performance Air Cooler | 867810-B21 Liquid Cooling System | 765654-B21 Liquid Cooling AIO | 820290-B21 Liquid AIO Cooler |
| Height | 4.5 inches | 5 inches | 1.75 inches | 5.2 inches | 5.2 inches |
| Width | 9.0 inches | 8 inches | 9.25 inches | 3.1 inches | 4.1 inches |
| Depth | 3.5 inches | 7 inches | 8.75 inches | 10.2 inches | 3.9 inches |
| Weight | 4.2 lbs | 4 lbs | 4.5 lbs | 4.3 lbs | 4.5 lbs |
Reviews & Ratings
G
Giovanni Russo
5
OEM fit and quiet operation.
P
Paul Harrison
4
Easy installation with noticeable airflow improvement.
E
Emil Johansson
5
Stable temperatures under continuous load.
D
David Thompson
4
Very dependable cooling upgrade.
Questions & Answers
What is the HPE ML350 Gen10 Redundant Fan Cage Kit (SKU: 874572-B21)?
The HPE ML350 Gen10 Redundant Fan Cage Kit (SKU: 874572-B21) is an expansion module for HPE ProLiant ML350 Gen10 servers that provides dual-fan redundancy for continuous cooling and system reliability.
Why is redundant cooling important for my HPE ML350 Gen10 server?
Redundant cooling ensures continuous airflow by supplying secondary fan capacity if one fan fails, preventing thermal shutdown and maximizing server uptime and performance.
How do I install the HPE 874572-B21 Redundant Fan Cage Kit?
Power down the ML350 Gen10 server, remove the existing fan assembly, slide the 874572-B21 module into the fan bay, and secure it with the captive screws before powering up.
Is the HPE ML350 Gen10 Redundant Fan Cage hot-swappable?
No. To install or replace the redundant fan cage module, the server must be powered off to ensure safe installation and system integrity.
How many fans are included in the HPE 874572-B21 kit?
The kit includes two high-performance, variable-speed fans configured in an N+1 redundancy layout to maintain cooling if one fan fails.
Which servers are compatible with the 874572-B21 fan cage?
The 874572-B21 fan cage is officially compatible only with HPE ProLiant ML350 Gen10 rack servers and is not supported in other models.
Can I mix the redundant fan cage kit with standard fan modules?
No. Mixing different fan modules can disrupt airflow balance, compromise cooling performance, and void the HPE warranty.
What are the power requirements for the HPE 874572-B21 fan cage?
The redundant fan cage draws under 50W at full speed and operates using the server’s standard power supply without additional power sources.
How can I verify that the redundant fan cage is functioning properly?
Use the HPE iLO management interface to check for green fan health status and confirm that RPM readings are within the normal operating range.
Does the HPE 874572-B21 fan cage come with a warranty?
Yes. It is covered by HPE’s standard one-year parts warranty, and you can extend coverage through optional HPE support contracts.
Where can I purchase the HPE ML350 Gen10 Redundant Fan Cage Kit?
You can purchase the kit from HPE-authorized resellers, the official HPE online storefront, or certified distribution partners.
How do I troubleshoot fan failure warnings after installing the redundant fan cage?
Ensure the module is properly seated, update the server firmware, clear iLO alerts, and run the HPE Insight Diagnostics fan test to isolate issues.
Will installing the redundant fan cage kit affect server acoustics?
No. The dual-fan design operates at variable speeds, optimizing airflow with minimal noise impact during standard workloads.
Can I use the HPE 874572-B21 fan cage in a non-HPE chassis?
No. The 874572-B21 kit is engineered exclusively for the HPE ProLiant ML350 Gen10 chassis and will not fit other server brands.
What is the expected lifespan of the HPE redundant fan module?
Under normal operating conditions, each fan is rated for up to 50,000 hours of continuous use, though environmental factors may affect longevity.
How should I dispose of or recycle the redundant fan cage kit?
Follow local e-waste regulations or return the module through HPE’s recycling program to ensure environmentally responsible disposal.