The Cisco ISR4451-X/K9 is a high-performance branch router in the Cisco 4000 Series that supports demanding enterprise branch networks requiring WAN aggregation, SD-WAN, voice, and security services with throughput scalable from 1 Gbps to 2 Gbps under performance licensing. It supports up to 32 GB DRAM and 32 GB flash with dual power supply redundancy for large branches or regional hubs.
