It's a charging cable'it won't necessarily change your life. Considering it costs as much as it does, I wish my first one didn't malfunction after only a year and a half. Also, am I the only one who finds the connector real difficult to get onto the port the right way? Anyway'if you have Di2 you need this whether it sucks or not.
This cable is secure and works great on the 12 sp DI2 setup
