WS-C4500X-16SFP+ Cisco Catalyst 4500-X Switch

Sixteen base ports with a defined airflow direction

WS-C4500X-16SFP+ is the Cisco Catalyst 4500-X base switch with sixteen 10-Gigabit SFP+/SFP interfaces, IP Base software and front-to-back cooling. Its exact ordering row excludes power supplies. Confirm the offered optics and power configuration separately; the product name does not describe a fully populated installation.

Keep the optional expansion distinct from the base order

Cisco lists C4KX-NM-8SFP+ as an optional eight-port expansion module. A base sixteen-port order should not be advertised as twenty-four populated ports without that module. Map the required links to the proposed interface and transceiver inventory before assessing spare capacity.

Check software scope and cooling components together

IP Base provides Layer 2 and selected basic Layer 3 functions. Enterprise Services requires the applicable software activation license, so verify the offered entitlement if advanced routing features are needed. Check the power and fan variants against the documented front-to-back airflow rather than mixing parts from the reverse-airflow model.

Account for the closed manufacturer support window

Cisco ended sale of this exact PID on October 30, 2020 and reached its last support date on October 31, 2025. That support milestone has passed. Evaluate a legacy replacement with a migration plan and do not imply that current availability restores manufacturer support.

Cisco data sheet | Cisco hardware guide | Cisco exact-model lifecycle notice