The TT webpage for the RDS TMC device, shows a picture of it, with what looks like a mini USB connector. However, the manual for my GO 730 shows the connection port for the RDS TMC as a round hole. The TT webpage claims that the device they are selling is compatible for the GO 730. What gives? Are they using a generic photo to depict the RDS TMC traffic receiver for all models? I've just ordered one on e-Bay (picture there shows a device with the round plug type connector) and I hate to halt the purchase just before it gets processed.