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726567-B21
HPE ML350 Gen9 Tower to Rack Conversion Kit
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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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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.
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.
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.
To get the detailed certification, please go to the Compliance Center.
| 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 |
Conversion kit allowed us to rack mount the ML350 cleanly. Very sturdy.
OEM kit fit perfectly with no alignment issues.
Saved cost by reusing tower hardware.
Well designed and easy to install.
Reliable rack conversion solution.
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.
This conversion kit is fully compatible with HPE ProLiant ML350 Gen9 servers only and is not supported on other models or generations.
The kit supports standard 19-inch EIA racks and occupies 2 rack units (2U) once installed.
The kit includes two rack rails (left and right), rack-mount brackets, mounting screws, cage nuts and installation instructions.