United States$5,000,000+
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O
Oliver Stanton
5
Conversion kit allowed us to rack mount the ML350 cleanly. Very sturdy.
726567-B21
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HPE ML350 Gen9 Tower to Rack Conversion Kit
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Name:
726567-B21
- Description:
- HPE ML350 Gen9 Tower to Rack Conversion Kit
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- Hpe
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726567-B21 Overview
726567-B21 is an enclosed cabinet designed for secure and efficient equipment installation. Offered as a floor-standing unit, it features a 42U height standard rack that adheres to a 19-inch mounting standard with a 600–800mm depth; it supports a weight capacity of 501–1000 lbs. The cabinet is built with cold-rolled steel, includes a vented door design, fixed side panels, and comes equipped with integrated cable management to support optimal airflow and cooling. Casters and leveling feet enhance mobility and stability, while a front door locking mechanism ensures access security, making it suitable for network closets, data centers, telecom racks, and AV equipment setups.
This product is engineered for reliability and expansion, offering rails that are included and an expansion-ready design with a grounding kit provided. With features that ensure passive ventilation and efficient cooling support, the 726567-B21 enclosure is ideal for demanding environments requiring controlled access and high-density installations. Its robust design and compliance with UL Listed certification reflect its suitability for professional deployments in data centers, networking closets, and telecom applications.
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Request bulk order quote for 726567-B21 for additional pricing. Browse the full Hpe Racks series or explore all Hpe products.
726567-B21 Specifications
- Product Type
- Rack
- Rack Type
- Enclosed Cabinet
- Mounting Type
- Floor Standing
- Rack Height (U)
- 42U
- Use Case
- Data Center / Networking Closet / AV Rack / Telecom
- Rack Width
- 19-inch
- Rack Depth
- 600–800mm
- Weight Capacity
- 501–1000 lbs
- Material
- Cold-Rolled Steel
- Door Type
- Vented Door
- Side Panels
- Fixed
- Cable Management
- Included
- Cooling Support
- Passive Ventilation
- Locking Mechanism
- Front Door Lock
- Casters
- Included
- Leveling Feet
- Included
- Rails Included
- Yes
- Expansion Ready
- Yes
- Grounding Kit Included
- Yes
- Color
- Black
- Compliance
- UL Listed
- Product Name
- 726567-B21 Enclosed Server Cabinet
- Height
- 73.5 inches
- Width
- 23 inches
- Depth
- 30 inches
- Weight
- 800 lbs
726567-B21 Use Case
Data Center Rack Density Optimization with 726567-B21 HPE ML350 Gen9 Conversion Kit
Enterprises standardize floor-standing ML350 Gen9 servers to 19-inch racks using the 726567-B21 HPE ML350 Gen9 Tower to Rack Conversion Kit. This migration frees critical floor space, streamlines cabling and cooling, and maximizes rack unit utilization. Outcome: up to 30% higher server density, reduced power/cooling costs, and simplified hardware management at scale.
Remote Office and Edge Computing Deployment Using 726567-B21 Conversion Kit
Managed service providers and branch offices deploy HPE ML350 Gen9 servers in compact edge racks by retrofitting tower units with the 726567-B21 HPE ML350 Gen9 Tower to Rack Conversion Kit. This conversion ensures consistent rack-mount form factor across distributed sites, accelerates provisioning, and enables remote monitoring. Outcome: faster rollouts, improved IT asset standardization, and lower deployment costs.
Disaster Recovery Lab Standardization with HPE ML350 Gen9 Rack Conversion
IT teams build DR and test labs by converting existing ML350 Gen9 towers into rack-mounted servers using the 726567-B21 kit. This approach aligns lab infrastructure with production rack environments, facilitating realistic failover drills and hardware compatibility validation. Outcome: enhanced DR readiness, reduced testing discrepancies, and seamless failback to primary data centers.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 726567-B21 |  AE459B |  BW906A |  H6J65A |  H6J67A | |
|---|---|---|---|---|---|
| Product Type | Rack | Rack | Rack | Rack | Rack |
| Rack Type | Enclosed Cabinet | Enclosed Cabinet | Enclosed Cabinet | Enclosed Cabinet | Enclosed Cabinet |
| Mounting Type | Floor Standing | Floor Standing | Floor Standing | Floor Standing | Floor Standing |
| Rack Height (U) | 42U | 42U | 12U | 42U | 42U |
| Use Case | Data Center / Networking Closet / AV Rack / Telecom | Data Center | Data Center / Networking Closet / Telecom / AV Rack | Data Center / Networking Closet / AV Rack / Telecom | Data Center / Networking Closet / AV Rack / Telecom |
| Rack Width | 19-inch | 19-inch | 19-inch | 19-inch | 19-inch |
| Rack Depth | 600–800mm | 800–1000mm | 800–1000mm | 800–1000mm | 800–1000mm |
| Weight Capacity | 501–1000 lbs | 501–1000 lbs | 501–1000 lbs | 2000+ lbs | 2000+ lbs |
| Material | Cold-Rolled Steel | Cold-Rolled Steel | Cold-Rolled Steel | Steel | Cold-Rolled Steel |
| Door Type | Vented Door | Vented Door | Solid Door | Vented Door | Vented Door |
| Side Panels | Fixed | Removable | Removable | Removable | Removable |
| Cable Management | Included | Included | Tool-less | Included | Included |
| Cooling Support | Passive Ventilation | Passive Ventilation | Passive Ventilation | Passive Ventilation | Passive Ventilation |
| Locking Mechanism | Front Door Lock | Front Door Lock | Front Door Lock | Front Door Lock | Front Door Lock |
| Casters | Included | Included | Optional | No | Optional |
| Leveling Feet | Included | Included | Included | Included | Included |
| Rails Included | Yes | Yes | Yes | Yes | Yes |
| Expansion Ready | Yes | Yes | Yes | Yes | Yes |
| Grounding Kit Included | Yes | Yes | Yes | Yes | Yes |
| Color | Black | Black | Black | Black | Black |
| Compliance | UL Listed | UL Listed | UL Listed | RoHS / UL Listed | EIA-310-D |
| Product Name | 726567-B21 Enclosed Server Cabinet | AE459B Enclosed Data Center Rack | BW906A Enclosed Cabinet | H6J65A Enclosed Data Center Cabinet | H6J67A Enclosed Cabinet Rack |
| Height | 73.5 inches | 78 inches | 21 inches | 84 inches | 73.5 inches |
| Width | 23 inches | 24 inches | 19 inches | 24 inches | 27 inches |
| Depth | 30 inches | 36 inches | 35 inches | 36 inches | 36 inches |
| Weight | 800 lbs | 400 lbs | 200 lbs | 550 lbs | 250 lbs |
Reviews & Ratings
S
Sven Karlsson
5
OEM kit fit perfectly with no alignment issues.
H
Hassan Jamil
5
Saved cost by reusing tower hardware.
P
Paul Whitmore
5
Well designed and easy to install.
N
Nico Bernard
5
Reliable rack conversion solution.
Questions & Answers
What is the HPE ML350 Gen9 Tower to Rack Conversion Kit (SKU: 726567-B21)?
The HPE ML350 Gen9 Tower to Rack Conversion Kit (SKU: 726567-B21) is an official HPE accessory that converts your ProLiant ML350 Gen9 server from a tower configuration to a 2U, 19-inch rack-mountable unit.
Which servers are compatible with the HPE ML350 Gen9 conversion kit?
This conversion kit is fully compatible with HPE ProLiant ML350 Gen9 servers only and is not supported on other models or generations.
What rack size and rack units does SKU 726567-B21 support?
The kit supports standard 19-inch EIA racks and occupies 2 rack units (2U) once installed.
What components are included in the conversion kit 726567-B21?
The kit includes two rack rails (left and right), rack-mount brackets, mounting screws, cage nuts and installation instructions.
Is installation tool-less or does the kit require tools?
Installation requires only a standard Phillips screwdriver; no special tools or drill bits are needed.
How do I install the HPE ML350 Gen9 Tower to Rack Conversion Kit?
First, attach the rack rails to the rack posts. Then mount the provided brackets on the server chassis, slide the server into the rails, and secure it with the included screws.
Can I use this conversion kit in both universal and HPE-specific racks?
Yes, the 726567-B21 rails are engineered to fit standard universal 19-inch racks as well as HPE server-specific rack enclosures.
Does installing this conversion kit affect my HPE server warranty?
No. Using an official HPE conversion kit does not void or modify your existing HPE ProLiant ML350 Gen9 warranty.
How much weight does the conversion kit add to the server?
The complete conversion kit adds approximately 4.4 pounds (2 kg) to the server’s total weight.
What are the physical dimensions of the rack conversion rails?
Each rail measures roughly 23.6 inches (599 mm) in length, 1.5 inches (39 mm) in width and 5.8 inches (147 mm) in height.
How long does installation of the conversion kit typically take?
A qualified technician can install the kit in approximately 15–20 minutes.
Where can I purchase the HPE ML350 Gen9 conversion kit (SKU 726567-B21)?
You can order it through any HPE authorized reseller, the HPE Parts Store online or via HPE’s global distribution network.
Is the conversion kit covered by HPE support and service?
Yes, the kit is covered under HPE’s standard parts warranty and is eligible for HPE technical support.
Can I revert my server back to the tower configuration after installing the kit?
Yes. You can uninstall the rack rails and reattach the standard tower feet to restore the original tower form factor.
Are replacement parts available for the rails and brackets?
Yes. Replacement rails, brackets and screws are available as individual spares through HPE using the appropriate spare part numbers.
Does the HPE ML350 Gen9 rack conversion kit support high-density deployments?
Yes, by enabling 2U rack mounting, the kit allows you to integrate multiple ML350 Gen9 servers in a standard rack for optimized data center density.