Using this 30cm USB Micro B Round Panel Mount Extension Cable is a breeze. First, measure the panel where you want to install it. Make sure the panel thickness is within the 30mm range. Then, use a common hole - saw or bit to drill a hole in your wood, plastic, or metal panel. Unscrew the plastic nut on the cable, insert the plug through the hole, and re - attach the nut. You'll then have a USB Micro B jack on one end and a Micro B plug on the other for your connection needs. When it comes to maintenance, keep the cable away from sharp objects that could cut it. Also, avoid bending it too sharply as this might damage the internal wires. If the cable gets dirty, you can gently wipe it with a dry cloth. And always store it in a cool, dry place when not in use.