the nf-f12 5v fan recommended, I don't think anyone here has posted 1st hand experience with. I see it can be had for $20 at Amazon.
I just received my Xfinity S4 140 mm quiet rated fan from Amazon for $15. It moves enough air for me and is also quieter then Tivos internal fan by a long shot
I just received my Xfinity S4 140 mm quiet rated fan from Amazon for $15. It moves enough air for me and is also quieter then Tivos internal fan by a long shot