When using the RJ socket connector, the inside of the interface should not be exposed to water, because water will cause the metal transmission chip inside the RJ socket to get damp, and affect the performance, and severely cause short circuit problems. Before pulling out the RJ socket connector, first observe whether the RJ socket is in the case of loosening the locking spring or pressing the buckle. If it is not, it cannot be forcibly pulled out to avoid damage to the RJ. The components inside the socket interface are a very important common sense question