Want to Upgrade my Comcast Modem Tags: Performance Modem Motorola Cable Networking Last response: October 18, 2012 5:08 AM in Networking Share trchilson October 17, 2012 7:08:33 PM I'm looking to upgrade my SB-5100 Motorola Cable modem that I now rent from Comcast. My main objective is to increase my internet performance. More about : upgrade comcast modem john-b691 October 18, 2012 5:08:50 AM You could try a modem that has docsis 3 support but if comcast is only using docsis 2 in your area the new modem will just revert back to docsis 2. Modems are pretty stupid they either work or they don't. m 0 l Can't find your answer ? Ask ! Publish Related resources Upgraded modem 50 speed with comcast Forum SolvedHow to configure office network with (1) Comcast modem/router; (2) wired switch; (3) wireless router Forum SolvedComcast Modem Keeps Dropping Connection Forum SolvedCan I use a Comcast Modem/Router in 1 combo as JUST a modem and connect my OWN router? Forum Trying to set up dlink dir-655 wifi signal to my comcast modem/router tc8305c Forum Comcast triple play. Need help with phone line/modem Forum SolvedHow can I make a signal stronger from Comcast Wireless Modem + Cisco Router? Forum SolvedNetworking Belkin Extender to Comcast Router/Modem Forum Comcast Modem with Modem Router Combo? Forum SolvedNew Modem and Router for Comcast? Forum Wireless Comcast modem Forum Phone fails with Comcast's new modem Forum SolvedConnecting two routers to one modem comcast Forum SolvedBest modem for comcast plan w/ phone plain Forum Did Comcast brick my modem (Motorola SB6121)? Forum SolvedComcast Modem Replacement Issues Forum Comcast modem keeps dropping wifi (limited access) Forum Solvedneed help on Comcast modem decision Forum SolvedOpinion on Comcast Modem and Routers In General Forum SolvedWireless Access Point and Comcast modem Forum More resources Read discussions in other Networking categories Routers Gateways VPN LAN WAN Firewalls Cisco Netgear !