Black Box CMA-1U

Overview

The Black Box CMA-1U is a cable management arm designed to organize and secure network cables within a 19-inch rack. It extends from 28.5 inches to 33 inches, providing adjustable support for various equipment depths while maintaining a compact 1U height. This arm helps reduce cable clutter and prevents sagging, making it a practical solution for data centers, server rooms, and IT closets where space and cable integrity are critical.

Key features

• Adjustable length from 28.5 to 33 inches to accommodate different equipment sizes
• Compact 1U height that fits neatly into standard rack setups without wasting space
• Mountable on either the left or right side of the rack for flexible installation
• Compatible with 19-inch racks featuring both square and round mounting holes
• Supports equipment from major brands like Dell, HP, and IBM, especially those using slide rails
• Helps maintain cable integrity by preventing sagging during equipment movement

Key specs

• Height: 1U
• Adjustable length: 28.5 to 33 inches
• Rack compatibility: Standard 19-inch racks with square or round holes
• Mounting options: Left or right side of rack

Installation and setup

The arm’s design allows for straightforward installation on either side of your rack, adapting to your existing setup without requiring additional modifications. Its compatibility with both square and round mounting holes ensures it fits a wide range of standard racks. This flexibility simplifies integration into your current infrastructure and supports efficient cable routing alongside slide-rail equipment.

Ideal uses and environments

This cable management arm is well suited to environments where space optimization and cable protection are priorities. It works effectively in data centers, server rooms, and IT closets, especially where equipment frequently slides in and out. By keeping cables organized and secure, it reduces the risk of damage and downtime, making it a strong choice for IT professionals managing complex rack setups.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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