Cable ring StarTech.com CMHOOK1UN5PK Black Steel 5-Pack 1U Vertical

The StarTech.com CMHOOK1UN5PK is a 5-pack of 1U vertical cable management D-ring hooks designed for standard 19" 2-post and 4-post server racks and cabinets. Constructed from powder-coated black steel, each hook measures approximately 45 mm wide and 101 mm deep and mounts to rack posts with 1U spacing to help organize bundled power and network cables while protecting connectors and improving airflow.

Advantages

These cable rings feature an 11 mm (0.4 in) opening that allows easy insertion of bundled cables and a smooth, snag-resistant finish to maintain cable integrity. The steel construction with a powder-coated surface provides durability for long-term use. Installing multiple hooks along rack posts reduces strain on ports and connectors and helps maintain better airflow within the rack.

Suitable for

• Cable organization in 19" server racks and network cabinets
• Managing power and Ethernet cable bundles
• Reducing connector and port strain in dense rack installations
• Improving internal rack airflow by organizing cables

Key specifications

• Brand: StarTech.com
• Model / MPN: CMHOOK1UN5PK
• Pack quantity: 5 hooks
• Material: Powder-coated steel
• Color: Black
• Height: 1U mounting spacing
• Width: ~45 mm
• Depth: ~101 mm
• Opening diameter: 11 mm (0.4 in)
• Compatible with 19" rack posts with 1U standard spacing
• EAN: 0065030902168

How to use

Mount each 1U cable ring to the internal or external face of a 19" rack post that uses 1U spacing, aligning the mounting holes with the post. Secure the hook using appropriate rack screws (not included). Route bundled power or network cables through the 11 mm opening of the D-ring to support and guide cables along the rack posts. Install multiple hooks at different heights as needed to maintain orderly cable paths and reduce strain on connectors.

Usage recommendations

For best results, combine these D-ring hooks with hook-and-loop ties, plastic cable ties, or a cable lacing bar (sold separately) to secure cable bundles. Avoid overfilling the 11 mm opening to prevent excessive bending or compression of cables.