not sure if self activation with comcast be browser specific , but I could not get it to pop up with ie . when I try to hit the web with Firefox , the page come right up and I go through the step and be back online in about 5 minute . I do not remember the page off the top of my head , but best to look it up before you do the modem swap with you account no. . after the swap though , I could not get to google 's site with either browser . if I hit it by IP address , it work fine . I research it and nothing be conclusive . but apparently there be some issue with the modem and comcast . I do not want to be on the phone with comcast forever or listen to finger printing , so I find a workaround and just add google 's IP address to my host file . change my dn server do not work . I be also get quick disconnect and reconnect from my chat program that be never happen before . but it have not affect my fast downloads\/uploads that I be aware of . and multiple packet testing show no lose . oh , forget to mention I do need to upgrade my old router too because I do not get any speed improvement initially . Make sure you get a gigabit router in order to utilize full potential .