C1-CISCO4331/K9 - Cisco 4000 Series 4331 3 x onboard WAN or LAN Ports 1000Base-T + 2 x RJ-45 Ports + 2 x SFP Ports Gigabit Ethernet 1U Rack-mountable VoIP Gateways Router
Cisco 4000 Series Integrated Services Routers - Cisco
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Cisco Integrated Service Router (ISR) 4331 – SAFAD