Through structural design adjustment, the RJ45 network module dust cover interface is converted into a dedicated network interface to prevent the misinsertion of conventional network jumpers. The RJ45 crystal head is equipped with a dedicated unlocking tool to prevent misinsertion and removal. A dedicated unlocking tool can be used to remove a dedicated network adapter. The adapters and cables between connectors can be selected in red, yellow, blue, and green to identify the network information system