Using this MMCX to SMA COAX cable is easy. Just connect the MMCX male end to one device and the SMA female end to the other. When using, make sure the connections are secure to avoid signal loss. Don't pull the cable too hard to prevent damage. To maintain it, keep it in a dry place. If it gets dirty, you can gently wipe it with a soft cloth. This cable is a great addition for your antenna and FPV needs.