Ever since Plextor introduced it's first ConvertX PX-M401U Analog to Digital Video Converter, people have been begging for more features, more options, more power, and PVR functions. The second generation of ConvertX was born - the PX-M402U, which introduced hardware DivX encoding, as well as the standard hardware MPEG-1, MPEG-2, and MPEG-4 encoding of the first model, but still no PVR features. Months later, Plextor introduced yet another ConvertX device - the PX-AV100U, and this one was aimed at more the mainstream crowd. The price was reduced, and the quality remained excellent. Plextor had pulled the hardware encoding features, and left this unit with only software encoding - relying on the host machines CPU power to perform the tasks. Once again, PVR was nowhere to be found on this mainstream unit.