The Cisco C4900M-BKTD-KIT is a rack-mount accessory kit specifically designed for use with Cisco Catalyst 4900M series switches. It includes the essential front and rear mounting brackets along with installation hardware that allows the 4900M chassis to be securely mounted in a standard 19-inch equipment rack, providing strong, stable support and helping to ensure proper airflow, cable management, and weight distribution in data center or enterprise rack environments. This kit simplifies physical deployment and maintenance of the Catalyst 4900M switch by giving IT teams the hardware they need to install the switch reliably in rack-based infrastructures