Cecil has been dealing with issues with Spectrum and he's replaced the router. Can he replace the modem too? Leo says yes. He can buy his own modem and save himself a $10 a month rental charge in the process. He'll want to check with Spectrum to see what routers Spectrum supports, and based on those, he can buy his own. Most support the Surfboard DOCSIS III. There's also the NETGEAR Nighthawk.