Middle Atlantic CM2-U1KEYA-BK Unloaded Keystone Communication Module

Overview

The CM2-U1KEYA-BK is a single unloaded keystone module built for 5400 Series raceway installations where you need a clean, flush-mount opening for field-installed keystone jacks without committing to a pre-loaded connector type. As an unloaded module, it ships as an empty carrier — you select and install the specific keystone jack (RJ45, coax, fiber, or other keystone-format connector) to match the actual drop requirement at each raceway location. That flexibility matters on jobs where the connector mix isn't finalized at rough-in, or where different offices on the same run need different jack types. Finished in black to match darker raceway and faceplate runs, the CM2-U1KEYA-BK (often searched as CM2 U1KEYA BK) is a low-cost, high-utility part that shows up in bulk on any project standardizing on 5400 Series raceway for structured cabling drops.

Key Features

• Unloaded Keystone Format: No connector is pre-installed, so you're not locked into a jack type at time of purchase — order the module now and finalize copper, coax, or fiber keystone jacks later as the drop requirements firm up. This avoids stocking multiple pre-loaded SKUs for every possible connector combination.
• Flush Mount Configuration: Sits flat against the 5400 Series raceway faceplate opening rather than protruding, which keeps the finished wall run looking consistent across a corridor or open office where dozens of these modules may be installed side by side.
• Single-Gang Module (Model CM, Type 2A): Sized for one keystone position per module, giving you granular control over port count per location instead of over-provisioning a multi-port faceplate where only one drop is needed.
• Black Finish: Matches black raceway and black faceplate hardware for a uniform look in AV racks, conference rooms, and commercial spaces where raceway color is part of the design spec — no mismatched white modules on a black run.
• UL Listed (Canada and US): Independent safety listing for both markets simplifies specification on cross-border or multi-site projects where inspectors expect a recognized mark on communication module hardware.
• Purpose-Built for 5400 Series Raceway: Designed specifically for Middle Atlantic's 5400 Series raceway system, so fit and mounting geometry are dialed in rather than adapted from a generic keystone bracket — one less compatibility question during rough-in.

Integration & Compatibility

The CM2-U1KEYA-BK is designed for use on 5400 Series Raceway, making it a direct fit for facilities already standardized on that raceway platform for cable pathway and termination. Because the module is unloaded, integration with your structured cabling plan happens at the jack level — pair it with the keystone connector your network design calls for (copper RJ45, coax F-type, or fiber adapter, depending on what's stocked separately). This is a practical part to combine with broader cable management planning inside AV racks and equipment rooms, particularly where raceway routes are shared between rack-mounted gear and wall-mounted device drops. If you're speccing raceway and keystone hardware across a larger installation, it's worth reviewing a PoE and cabling planning guide before finalizing jack counts and module quantities, and checking the broader racks and cabinets category if the same job involves equipment housing alongside the raceway runs. For projects also deploying video surveillance infrastructure over structured cabling, this module fits the same 5400 Series raceway backbone commonly used to route camera and network drops through finished spaces. Browse the broader Legrand Wiremold catalog for compatible raceway components and other module types used on the same system.

What's in the Box

• 1x CM2-U1KEYA-BK unloaded keystone module, black finish

Frequently Asked Questions

Q: Does the CM2-U1KEYA-BK come with a keystone jack installed?

A: No. It's an unloaded module — the keystone jack (RJ45, coax, fiber, etc.) is sold and installed separately to match your specific drop requirement.

Q: What raceway system is the CM2-U1KEYA-BK designed for?

A: It's used on 5400 Series Raceway, per the manufacturer specification.

Q: Is the CM2-U1KEYA-BK UL listed?

A: Yes, it carries UL approval for both Canada and the US.

Q: What mounting configuration does the CM2-U1KEYA-BK use?

A: It's a flush mount module, sitting flat against the raceway faceplate opening.

Q: What color is the CM2-U1KEYA-BK?

A: Black, matching darker raceway and faceplate hardware.

Q: Is the CM2-U1KEYA-BK a single or multi-port module?

A: It's a single unloaded keystone module — one keystone position per unit.

Jerry Tildsen

The CM2-U1KEYA-BK crosses my desk on almost every 5400 Series raceway job that needs field-flexible terminations — it's an unloaded module, so I'm not committing a customer to a connector type before the cabling plan is locked. On a recent office build-out, we specified a mix of copper and fiber drops off the same raceway run, and unloaded modules like this one let us keep a single black SKU on order instead of juggling pre-loaded variants for every jack type.

Technical Highlights:

• Unloaded keystone configuration: jack selection happens at install, not at time of purchase — useful when the final connector mix (RJ45 vs. coax vs. fiber) isn't locked at rough-in.
• Flush mount, single-gang (Type 2A): keeps the raceway faceplate line flat and consistent when you're installing a run of these side by side down a corridor.
• UL listed for both Canada and US: one part number clears inspection on cross-border or multi-site jobs without a separate Canadian-market SKU.

Deployment Considerations:

• Because it's unloaded, budget for the keystone jacks as a separate line item — this module alone doesn't complete the drop.
• Confirm your raceway is genuinely 5400 Series before ordering in bulk; the module is fit specifically to that raceway family, not a universal keystone bracket.

I spec the CM2-U1KEYA-BK by the dozen on commercial tenant build-outs where the raceway color is black and the cabling contractor wants to finalize jack types after the walkthrough — it's the right part when you need mounting hardware locked in now and connector flexibility later.