Cisco ISR 4331 3GE Router | Enterprise WAN, Branch Routing — CON-L2NB3-EPA24GE0

Keep critical branch services online with a router platform designed for enterprise WAN edge deployments. The Cisco ISR 4331 configuration combines 3 Gigabit Ethernet ports with 2 NIM slots and 1 SM slot, giving infrastructure teams a compact chassis that can adapt as connectivity requirements change. With 4 GB flash and 4 GB DRAM, this model is built to handle routing, policy enforcement, and branch services with the headroom expected in production environments. The modular design helps preserve investment value by allowing targeted expansion instead of full platform replacement when new interfaces or services are needed. For organizations standardizing on Cisco infrastructure, the ISR 4331 fits naturally into branch, remote office, and distributed enterprise topologies where uptime, predictable performance, and service flexibility matter more than low-cost commodity hardware. It is a practical choice when the network must support business applications, voice, and secure connectivity without adding unnecessary complexity. Ideal For Branch office WAN edge routing Remote office connectivity for distributed teams Modular expansion for enterprise network services Cisco-standardized branch infrastructure Why This Product 1 Adds modular expansion with 2 NIM slots and 1 SM slot 2 Includes 4 GB flash and 4 GB DRAM for branch workloads 3 Provides 3 Gigabit Ethernet ports for enterprise connectivity 4 Fits Cisco-standard branch routing environments