![My grandfather gave me a Cisco 2500 series router and it looks like it predates Ethernet. How can I get this working? What are all these ports, what signals do they use, My grandfather gave me a Cisco 2500 series router and it looks like it predates Ethernet. How can I get this working? What are all these ports, what signals do they use,](https://i.redd.it/tikgjcqfvqi61.jpg)
My grandfather gave me a Cisco 2500 series router and it looks like it predates Ethernet. How can I get this working? What are all these ports, what signals do they use,
![Is there any router port module of the Cisco Packet Tracer Router? - Network Engineering Stack Exchange Is there any router port module of the Cisco Packet Tracer Router? - Network Engineering Stack Exchange](https://i.stack.imgur.com/9hQHW.jpg)
Is there any router port module of the Cisco Packet Tracer Router? - Network Engineering Stack Exchange
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