Comcast Cable modem upgrade how to. Motorola SB6120 & Zoom 5341 modems and the slow upload speed problem

Summary: this article is a tutorial on how to upgrade your cable modem as well as my experience upgrading my Comcast (Colorado) cable modem to a Motorola SB6120 and then a Zoom 5341. My experience (low upload speed) may be related to my location on Comcast’s network so other Comcast users outside the Denver / […]