Hi. I have used an Arris Surfboard SBG6782-AC Wireless Cable Modem Gateway since April 2016. If I were to get a mesh system would any changes need to be made? But, what if I were to get an updated router, is there any way to separate the router function from the modem so I could keep the modem, but get better reception on all my devices with a better router? Or would I need a new modem too? Thank you for cutting the problem down to size. I’m not sophisticated in this realm.