@muffin44 Thank you for your post. First, please try to ping the Controller host IP directly from the switch. Additionally, access the switch’s management interface and locate the following page; use...

@JesusM Thank you for your post. At present, the ER7212PC does not support TP-Link DDNS. You can only select from the listed providers or use a Custom DDNS that supports a URL-based update.

@calande Thank you for your post. Please confirm the current hardware and firmware versions of your NVR1004H-4P. If it is not running the latest firmware, please upgrade to the newest version....

@Chaotix Thank you for your post. Could you please tell us the exact model of the SFP+ modules you are using? Have you tried any other modules? Also, how are you measuring the file-transfer speed? I...

@AliReza_A Regarding the issue you mentioned, please confirm once again: does this problem occur only with the TL-SM331T transceivers, or does it also affect all other transceivers?

@AliReza_A Thank you for your post. In general, if a solution or recommendation is provided for the issue raised in the thread, the thread will be marked as the “recommended solution.” You can...