Cisco ISR4331/K9 router with 3 Gigabit Ethernet ports, 2 Network Interface Module slots, 1 Service Module slot, 4 GB flash memory, 4 GB DRAM (default RAM). The Cisco 4000 series ISRs (Integrated Service Routers) are designed to greatly improve enterprise branch networks routing and network services. Because of their application-aware networking features and a wide array of voice the ISR4000 series can be custom fitted to meet the needs of a wide variety of enterprise networks.
