** We are unable to provide private technical support for APM/GPS because the configuration is not easy (full features but not easy to use, sometime you need a soldering gun to work with). So please purchase APM/GPS only if you know how to configure. You are recommended to google and seek helps on forums. Thank you for your kind attention.
** Please note that the pins (soldered to the PCB) at the connector slot are weak so do not push/pull it too hard without holding it. We will not replace a new one if you push/pull it off. So please use one hand to hold the slot and another hand to plug in the cable.