![The Cisco 1841 Integrated Services Router is part of the Cisco 1800 routers family. What distinguishes this device from the others is The Cisco 1841 Integrated Services Router is part of the Cisco 1800 routers family. What distinguishes this device from the others is](https://shop.chulo.co.uk/media/blog/Cisco_1841.png)
The Cisco 1841 Integrated Services Router is part of the Cisco 1800 routers family. What distinguishes this device from the others is
Cisco Catalyst Rugged Series IR1835 - router - desktop, DIN rail mountable, wall-mountable - IR1835-K9 - Data Routers - CDW.com
![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)