Looks neat. I fabricated my own cable for the XM Direct unit and it works great. I am curious as to where this is getting 12V power from? That black cable connected to the RS-232 head in the picture probably connects to an AC-DC adapter. I routed my power to the 12V from my PSU in my computer. But for $50? That's kinda steep. You're better off making your own IMO. The parts will cost much less.