Using this Line 6 USB power supply is super easy. First, connect the USB cable to your Relay G10, G70, or G75 wireless system. Then, plug the power supply into a suitable USB power source. Make sure the power source is stable to avoid any interruptions. When not in use, unplug the power supply to save energy. To keep it in good condition, keep it away from water and extreme temperatures. If you notice any issues, like it not powering on, check the connections first. That's all you need to know to get the most out of your power supply.