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Upgraded from SB6121 to SB8200 on Comcast 200/10 plan. SB6121 was running approx. 137Mbps/12Mbps with latency to Comcast speedtest @ ~29ms. With SB8200, approx 215Mbps/12Mbps with latency to Comcast speedtest site ~14ms, with 24+1 bonded channels down and 4 up. Good overall SNR and power levels (which I had on the older modem also). Box is sealed from factory with with clear tape disc and black security seal sticker on bottom of box (see picture) Included in the box is 12VDC 2AMP power supply and CAT5 Ethernet cable (see picture) Size is approximately the same as the SB6121 (see picture - black SB6121 left, white SB8200 right) Unit tends to put off a little more heat than the SB6121 it replaced (warm to the touch on top of unit, but definitely not hot) Plugged SB8200 Ethernet (port 1) into computer Ethernet port via standard Cat5 cable, connected coax (Comcast), plugged in power supply. After about 45 seconds of no lights, lights started coming on, one-by-one. Opened browser, was redirected to Comcast activation page. Tried automatic activation with Comcast username and password and was greeted with error that I had to call Comcast. Powered off modem and decided I would try the process over again from the start. Instead of using username and password, used Comcast account # and SB8200 was provisioned very rapidly. Haven't tried SB8200 Ethernet port 2 as I don't have a need and I doubt that Comcast would allow residential customers to purchase static IP's without a business plan per their stated policies. Status page is located at the familiar 192.168.100.1 and Spectrum Analyzer is @ 192.168.100.1:8080 (u: admin p:password) Did I need the new SB8200? no. Can I tell a difference in webpage load times? no Is this futureproof? for now.