If the optical module is faulty, replace it with the spare part. If. According to the customer's feedback, how should we analyze and solve the issue that the switch and optical module are incompatible or cannot be used? In this article, ETU-LINK proposes the following solutions to this issue. Check compatibility between the optical module and switch Most switch brands have specific compatibility requirements. Understanding how to troubleshoot and prevent a failing optical module is vital for good network stability. Resolving this issue may involve hardware troubleshooting, driver. The card is detected in Windows 11 and Ubuntu 22. I've tested different firmwares.