Support demanding access-layer workloads with a switch module designed for dense, power-aware network edges. The HPE Aruba Networking CX 5420 24G CL4 Module delivers 24 Gigabit Ethernet PoE Class 4 ports and 4 SFP+ uplinks in a plug-in form factor, making it well suited for modular campus switching where port density and uplink headroom matter. Built for Layer 3 managed operation, this module fits environments that need routing capability at the edge without moving to a larger chassis footprint. The front-to-back airflow design aligns with standard data center and wiring closet cooling patterns, helping maintain predictable thermal behavior in rack-based deployments. For teams standardizing on Aruba CX infrastructure, this module extends the 5420 platform with a balanced mix of access ports and high-speed uplinks. It is a practical choice when you need to power phones, cameras, and wireless access points while preserving bandwidth for aggregation and upstream connectivity. The result is a cleaner edge architecture with fewer compromises on density, power delivery, or uplink planning.