I have an older MX3000, c. 2005, with the proprietary mini-USB connector and have been unable to locate where my cable has disappeared to. I wanted to give the community a head's up based on my failed search for a replacement. Called up URC's parts department who told me that the cable is no longer made and there is no stock. The parts guy pointed me to this adapter kit
which he said should work. The price seemed a bit steep, so I bought from BH
who had it for $10 cheaper and free shipping. Arrived today, and while it looks like the mini-B 4-pin connector should work, it doesn't fit :-( I have reported this back to URC and am awaiting their response. In the meantime, I saw that Automation Source had the CBLUSBV2G cable listed, talked with them, and they said they had no problem getting the cable drop shipped to me. Fast forward 5 hours and they got back to me, saying that indeed the cable was no longer available, they removed it from their website, and they forwarded me the same Retrak cable kit suggestion that they got from URC!
Anyway, I'll post if I get any good response from URC. Would be interested to know if anyone else has found a workable solution.