Cisco ISR 4321 2GE 2NIM 4G Flash 4G DRAM

Keep branch and small-office traffic under control with a router built for practical edge deployment. The Cisco ISR 4321 combines 2 Gigabit Ethernet ports, 2 NIM slots, 4 GB flash, and 4 GB DRAM in a compact platform that supports routing, service expansion, and day-to-day network operations without excess footprint. For teams that need more than basic connectivity, the modular NIM architecture matters. It gives you room to adapt the router to changing WAN or service requirements without replacing the entire platform. The onboard memory and flash support the software and operational demands of a branch edge device, while the dual GE interfaces provide the wired connectivity expected in modern distributed networks. This model is a strong fit when reliability, serviceability, and platform longevity matter more than chasing the lowest entry price. It is designed for organizations that want a router they can standardize on, expand as needs change, and keep in service across multiple deployment cycles.