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    SB6120 vs SB6121 Motorola Cable Modems

    This is a discussion on SB6120 vs SB6121 Motorola Cable Modems within the Comcast forums, part of the Cable and Satellite Providers category.

    Results 1 to 2 of 2
    1. #1


      Can anyone tell me the difference between the SB6120 and the SB6121? The SB6120 is almost more, but both modems are DOCSIS 3.0 so what would be the advantage?

    2. #2
      Join Date
      Apr 2010
      Wantage NJ


      On/off switch and MoCA filter in the 6121. Nothing software wise, they even run the same f/w. I have the 6120, works fine. Get whatever is cheaper.
      Ryan, N2RJ

      Extra class certified antenna NUT

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