Using this GPIO header is easy. First, place the extra - tall female header on your Raspberry Pi (it works with A+, B+, Pi 2, and Pi 3). Then, connect your PCB to the header. The 16.5mm height ensures that the PCB won't interfere with the Ethernet and USB jacks. Since the pins are 3mm long, you don't have to worry about cutting long pins, which simplifies the process for basic Pi plate design. When handling the header, be gentle to avoid bending the pins. To maintain it, keep it in a dry place and clean it occasionally with a soft, dry cloth. Each order comes with one header, so make sure you order enough if you need multiple ones.