Full specification
ISR 4431 Integrated Services Router base unit with 4x 1GbE ports, 4x SFP uplink ports, 3 NIM slots, 1 ISC slot, 4GB DRAM (data plane), 4GB DRAM (control plane), 8GB Flash memory (expandable to 32GB), 500 Mbps-1 Gbps system throughput, security bundle included. Service contract: 24/7 support for 24 months with hardware replacement.