I have Diamond's PVR 660 XtremeTV V tuner, and it is an external unit that plugs directly into a USB v2.0 port where it also draws it's power. Pretty cool thing and it says that Windows 2K, XP, and Vista is supported. Of course Linux/Fedora support is not known anywhere that I looked. Many have asked only to be drawn into a blackhole or so it seems. I did download ivtv source but haven't had a chance to look it over but I doubt it will work for this product. Does anyone know anything about support for this product or has done something with it? Thanks- Dan