I have a Rep 2 from Makerbot, and have been using it for many years now, with thousands of hours of printing. It was bound to break down after such heavy use. Of course, Makerbot does not offer replacement cables on their website, and their phone support isn't much help either (they only want you to subscribe to a support contract rather than just give you the part you need). While it was hard to diagnose the problem, some Googling and talking on forums led me to figure out I needed a replacement cable. This one did the trick, and not only that, when pairing it with the jumper cable I now only have to worry about the jumper cable wearing out in the future, so after 5 more years and thousands more hours, my next replacement cable will be much much cheaper. I live overseas, so I was also happy that the shipping wasn't terrible expensive, and the product arrived very quickly!