I have run into the same problem with a G-tech 500GB mini drive. Carbon Copy CLoner times out while trying to use it as a backup drive. No daisy chaining, all connected to teh Mac running 10.7.5.
Tony at G-tech wasn't much help, "We have thousands of those drives out there and no one yet has had this problem."
Well Tony, you do now. I tried as different cable last night, same problem, same solution.
Weirdly, the thing worked fine for the first few backups.
The folks at CCC are trying to help.
Retrieving data ...