Using these connectors is easy. For the Grove to Grove, simply connect it between two components for RGB LED strip extensions. For the Grove to Pin, connect the single PINs to the device without a GROVE port and the GROVE port to your main setup. When using the Grove to SERVO, connect the SERVO port of the servo motor to this converter and the GROVE port to the M5Core. As for maintenance, keep the connectors clean and dry. Avoid bending the pins too much as it may damage them. If you encounter any issues, check the connections first to ensure they are secure.