I totally had this problem with my K2. CS sent me a new cord and it worked for awhile but is not recognizing it now. I work on a laptop so the suggestion about using a back port didn't help. The problem went on the back burner because I got a K3 and so far haven't had any problems. My husband is using the K2 now, so I need to get this figured out. I was interested to read the post about using the Blackberry cord. I may have to look for one of those.