The Cisco ISR 4221/K9 is a modular branch router designed for small-to-medium enterprise locations requiring integrated security, WAN optimization, and application visibility. The platform features two onboard Gigabit Ethernet ports, two NIM (Network Interface Module) slots for flexible WAN connectivity expansion, and one ISC (Internal Service Card) slot for security or advanced services. Standard configuration includes 4 GB DRAM and 8 GB Flash memory, supporting up to 12 Mbps encrypted throughput and multiple concurrent threat detection capabilities. Compatible with Cisco IOS XE software, the ISR 4221 suits branch offices, remote sites, and distributed enterprises needing consolidated routing, firewall, and VPN services without dedicated appliances. The compact form factor integrates easily into standard rack or shelf deployments. Part number ISR4221/K9 indicates this unit includes the security license bundle. Unit tested and guaranteed, available via quote.
