What Is the Cisco CN12904-RMK=? Rack Compatibility, Installation, and Key Benefits

​​Defining the CN12904-RMK=​​

The Cisco CN12904-RMK= is a ​​rack mount kit​​ designed for the Cisco Nexus 9504 modular chassis, enabling secure installation in standard 19-inch data center racks. This hardware accessory ensures proper airflow, weight distribution, and physical stability for the switch in high-density environments.

​​Technical Specifications and Compatibility​​

• ​​Compatible Models​​: Exclusively supports the ​​Nexus 9504 chassis​​ (N9K-C9504).
• ​​Materials​​: Heavy-duty steel brackets with pre-installed cage nuts and M6 screws.
• ​​Rack Standards​​: Compliant with EIA-310-D specifications for depth (up to 32 inches) and vertical mounting spacing.
• ​​Weight Capacity​​: Supports chassis weight up to ​​55 lbs (25 kg)​​, accounting for fully loaded line cards and power supplies.

​​Primary Use Cases​​

Data Center Deployments

The kit is essential for enterprises integrating Nexus 9504 switches into existing rack infrastructures, ensuring alignment with adjacent servers or storage systems.

High-Availability Networks

By preventing physical misalignment or vibration-induced hardware faults, it reduces downtime risks in environments like financial trading floors or cloud provider hubs.

​​Addressing Common User Questions​​

​​Q: Does the CN12904-RMK= require professional installation?​​
A: While Cisco provides detailed guides, ​​basic rack-mounting tools​​ (e.g., screwdrivers, torque wrenches) and two personnel are recommended for safe installation.

​​Q: Can this kit be reused for other Nexus models?​​
A: No. Its design is tailored to the Nexus 9504’s dimensions and weight distribution.

​​Procurement and Support​​

For verified compatibility and purchasing options, visit the “CN12904-RMK=” product page. Ensure your rack’s depth and load capacity align with Cisco’s specifications before ordering.

​​Practical Considerations​​

While the CN12904-RMK= might seem like a minor component, overlooking its role in physical infrastructure can lead to costly operational disruptions. In my experience, teams prioritizing precise rack alignment and load management see fewer hardware-related outages—proving that even foundational elements like mounting kits are critical to network resilience.