The Cisco ISR4331/K9 is a versatile integrated services router designed to deliver advanced services to small to medium-sized enterprises and branch offices. It comes equipped with significant capabilities in terms of throughput, scalability, and security, making it a suitable choice for a wide range of networking requirements. The ISR4331/K9 offers a default aggregate throughput of 100 Mbps, which can be increased to 300 Mbps with a performance license. This scalability ensures that the router can meet the evolving demands of business networks. Additionally, it supports Class of Service (CEF) only throughput of over 3 Gbps, highlighting its efficiency in handling data packets. This router features a comprehensive set of ports and interfaces to accommodate various network configurations and expansions. It includes three onboard WAN or LAN 10/100/1000 ports, providing flexibility in connectivity. Of these, two are RJ-45 ports, and one is an SFP port, allowing for both copper and fiber connections. The ISR4331/K9 is designed to support future growth with two Network Interface Module (NIM) slots, enabling the addition of voice, video, data, and security services. It also includes one onboard ISC slot for further expansion
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