After hours of trying, I cannot get this cable to communicate with my Samsung SCH-U740 phone. The drivers supplied on CD were Samsung PC Studio 3.0 which doesn't work with Windows Vista, but I downloaded the 3.2 version online which is Vista compatible. However, I still cannot get the software drivers working to establish a connection to the phone. I'm a computer programmer by profession, so, I can usually figure out a solution, but in this case I'm still stumped.