ISR4321-AX/K9 Cisco 4000 Series 4321 2 x Ports 1000Base-T LAN/WAN + 1 x Port SFP (mini-GIBIC) 1U Rack-mountable Integrated Service Router

The Cisco 4000 Series 4321 is a high‑performance, rack‑mountable integrated service router designed to deliver reliable, secure connectivity for modern enterprise networks. With dual 1000Base‑T LAN/WAN ports and an SFP mini‑GBIC slot, it provides flexible, scalable link options that support both copper and fiber connections. Built on Cisco’s proven 4000 platform, the 4321 delivers robust routing, advanced security features, and seamless integration with existing infrastructure, enabling businesses to streamline operations, reduce complexity, and maintain consistent, high‑throughput performance across the network. Its compact 1U form factor makes it an ideal choice for space‑constrained data centers and edge deployments.