HPE 1U Cable Management Arm for Rail Kit

The HPE 734811-B21 is a cable management arm designed for 1U rack environments where servers often need to slide out for maintenance. By guiding power, network, and storage cables along a controlled path, it keeps connections secure and reduces the risk of accidental unplugging or strain.

This arm moves in sync with the server on its rails, so technicians can pull the chassis forward, swap components, and push it back without rearranging cords. The design helps maintain clear airflow behind the equipment and prevents the tangle that can slow down troubleshooting in busy data centers or small office racks.

Installation is straightforward when paired with HPE rail kits such as 734807-B21, 789388-B21, or 872252-B21. Because it mounts directly to the rail kit, there is no need for custom brackets or extra tools beyond what comes standard with the rack. IT staff in enterprise data centers, university labs, or edge deployments will appreciate the time saved during routine service calls.

Once installed, the arm folds neatly behind the server. It measures roughly 6.35 × 53.04 × 25.4 cm and weighs about 4.54 kg, so it adds minimal load while remaining solid enough to support multiple cable bundles. The result is a cleaner rack, improved cable longevity, and faster access whenever hardware needs attention.

Highlights:

• Purpose-built for 1U HPE rack configurations
• Pairs with rail kits P/N 734807-B21, 789388-B21, 872252-B21, 874543-B21, and 879003-B21
• Guides and protects power, network, and storage cables
• Moves in tandem with the server during slide-in and slide-out operations
• Dimensions: 6.35 × 53.04 × 25.4 cm
• Weight: 4.54 kg
• Helps maintain clear airflow and quick access for maintenance