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Changed main modem, now have network issues; need help troubleshooting
Our main modem has 4 Ethernet outputs. The need for more outputs came so I feed one of the modem's outputs to a hub, adding 4 more connections. All worked perfectly until our modem had issues & needed replacing. Our DSL internet company sent us a new main modem & now we have issues getting the internet through this hub.
One computer (a MAC) indicates it is connected but we can't get the internet to work through that connection. It does, however, work using WiFi. We also had an Epson printer on the hub which isn't connected now as well.
Not sure how to trouble shoot this. Any ideas?