Donald

I bought it from Best Buy, but it was not cheap. About $80. Yes the FIOS box is right outside my house here in Reston, VA. Even if I do not choose to use it, it will be good competition.

vik, all I know is that about 2 or 3 weeks ago my download speed dropped. I think Comcast did something on their end to get ready for the 6 Mbps upgrade. I returned the rental and bought the SB 5120. I read on another forum that the SB 4100 was giving others problems. I would call Comcast tech support If I were you. Donald