New router + a Modem/Router?

Solution
Yeah, sure, plug a LAN cable into the Thomson and connect it to the Internet (Yellow) port on the N600.
Configure the N600 IP setting to accept a DHCP IP from the Thomson... and you're good to go.

Bryce1197

Honorable
Aug 7, 2013
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Does the Router then have to stay connected by wire after the configuration?