I have 1000 service with a new X1 box. According to this page: https://www.xfinity.com/support/articles/using-a-splitter-on-your-tv-cable I need a data outlet. Is this talking about Ethernet 100Mb/1Gb data connection? If it is, my house is already wired. What box do I order for each additional bedroom? How do I explain what I want to the sales people?
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