Upgrading my Cable Modem to DOCSIS 3.0 SB6141

"I use my own Cable Modem (Surfboard SB6141 ) with Comcast Cable. You do have to call their customer service and tell them you are changing modems and give them the MAC ID. This is located on the bottom of the modem. They need this so their system can address it. Also tell them to delete the old modem and you will return it so you won't get charged for rental.

One downside is that some bundle deals like triple play require you to have their modem to get the best price. You don't have to use their modem but its part of the deal so just keep it in the box. DOCSIS 3.1 is coming out and has much higher speeds but that only helps if the source offers very high speeds."