The Cisco ISR 4321/SEC-K9 Router is an integrated services router offering up to 100 Mbps throughput for VPNs and advanced security services such as firewall and intrusion prevention system (IPS). It features 2 module slots for scalability and supports centralized management via Cisco DNA and Meraki. This model is designed for businesses that require reliable routing, robust security services, and optimized network performance management.