Replace the fiber or optical transceiver to see if the connection can be established. If the issue persists, contact technical support. 1) Unused protection: When an optical module is not in use, a dust cap must be installed to prevent dust from entering the port and causing poor contact. 2) Cleaning specification: Use special wiping paper or dust-free cotton swab to wipe the end face in the same direction. So, if an optical module is broken, can it still transmit optical. An optical module is a critical component in modern optical communication systems, directly affecting transmission stability, network reliability, and operational efficiency. However, during installation and daily operation, various issues may arise.