Using this cable is easy. Just connect the 40 - pin end to your Raspberry Pi A+, B+, Pi 2, or Pi 3, and the 26 - pin end to your old 26 - pinout kit. Remember, it won't work with Raspberry Pi Model A or B. Keep the cable away from sharp objects to avoid damage. There's no special maintenance needed, but try to keep it in a dry place. That's all you need to know to get the most out of this cable!