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We have to agree with Joystiq that we're not quite sure to whom the MadCatz HDMI Conversion Kit is supposed to appeal. Of course, not all 360s have HDMI, but we're willing to bet that anyone who really cares about HDMI probably won't want a converter. We're no technical wizards, but we know that unless the signal is HDMI to begin with, it's not really HDMI anyway. It does scale to 1080p, but so does every other available 360 connection option. We suppose there is the possibility that it's simply more convenient, as it replaces multiple RCA connector with one HDMI connector and an optional optical cable. Even then, $90 seems a bit steep just to clear up some cable clutter. Then again, if you're rocking a 1080p TV, another $90 probably isn't that much. Should you desire one of the wonder-devices, they go on sale beginning in January.