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Does that Series 3 support Over the Air (OTA) Digital TV?
(I think most or even all do; but, you might wish to confirm that hardware is working...
I think they will likely only be a 64 bit OS; but, still run 32 bit apps.
That is just my wild guess.
Thank you about mentioning Roamio Basic experience. I figure if I am lucky in a year or two, I might get a Roamio Basic or earlier model of TiVo...
Port 80 is used to serve web pages.
I would verify that the TiVo can be remote...