Using this Micro SD Card PCB Extender is a breeze. First, take your micro SD card and place it in the little tray provided. Then, gently press the other end of the extender into the micro SD card port of your device, like a Raspberry Pi. This way, you can access the SD card easily without having to deal with hard - to - reach sockets. When using it, keep in mind that it's a bit of a hack. In high - speed and high - noise situations, it might not work as well. As for maintenance, just keep it clean and free from dust. You don't need to do anything special to take care of it. Also, remember that the micro SD card itself is not part of this product, so you'll need to provide your own.