Cisco ISR 4331 3GE, 2NIM, 1SM, 4G Flash, 4G DRAM | Enterprise Router — CON-L2NB3-SLASR1AK

Support branch operations with a Cisco ISR 4331 configuration built for practical network growth. With 3 Gigabit Ethernet ports, 2 Network Interface Module slots, 1 Service Module slot, 4 GB flash, and 4 GB DRAM, this platform gives infrastructure teams the mix of fixed connectivity and modular expansion needed for real-world branch deployments. The ISR 4331 class is a strong fit when you need more than a basic edge router. It provides room for service modules and interface modules, which helps when sites must add WAN services, specialized connectivity, or operational functions without replacing the entire router. That flexibility matters in distributed environments where downtime is expensive and branch requirements change over time. This configuration is especially useful for organizations standardizing on Cisco routing at the edge. It supports a cleaner lifecycle strategy, simplifies field replacement, and gives procurement a well-defined platform for branch refreshes. For teams balancing performance, expansion, and budget discipline, the ISR 4331 remains a credible choice for long-lived network infrastructure. Ideal For Deploy as a branch edge router for distributed office connectivity Replace aging branch routers with a Cisco-standardized platform Add WAN or service modules to support changing site requirements Use as a compact routing platform for small to midsize enterprise locations Why This Product 1 More expansion flexibility than fixed-port branch routers 2 3 GE ports support standard wired connectivity 3 2 NIM slots and 1 SM slot add deployment options 4 4 GB flash and 4 GB DRAM suit established branch workloads