I was looking at the UMC 2.0 and was curious. They said that it would have adaptors like the old UMC but it wouldn't have the same connector. What signaling options do you think that they will use in between the adaptor and the new UMC? Speculation: The new adaptors might use a Dallas Semiconductor one-wire eeprom. With the ground connection you would only need one other wire to signal the UMC to the voltage and amperage present.