Cisco ISR 4331 3GE Router, 4 GB DRAM, 4 GB Flash | Enterprise WAN — CON-L2NB3-MASRX16B

Maintain branch uptime and keep critical traffic moving with the Cisco ISR 4331. This platform is built for distributed environments that need dependable WAN routing, modular expansion, and enough local resources to support demanding edge services. Three Gigabit Ethernet ports provide the core wired connectivity, while 2 NIM slots and 1 SM slot give you flexibility for interface growth and service integration. With 4 GB DRAM and 4 GB flash, the router is sized for the operational demands of branch deployments that need consistent performance and room for configuration depth. The ISR 4331 is a strong fit for organizations standardizing on Cisco routing at the edge, where uptime, manageability, and expansion options matter more than a low entry price. It is designed for teams that want a platform they can deploy once and extend as site requirements change. Use it where branch traffic, secure connectivity, and modular design need to stay aligned over time. Ideal For Branch office WAN routing for distributed enterprise sites Retail or remote office connectivity with modular interface expansion Standardized Cisco edge deployment across multi-site networks Upgrade path for branches needing more memory and service module capacity Why This Product 1 Adds modular expansion with 2 NIM slots and 1 SM slot 2 Includes 4 GB DRAM and 4 GB flash for branch workloads 3 Offers 3 Gigabit Ethernet ports for core connectivity 4 Fits enterprise edge deployments that need Cisco routing consistency