@KJK Last update. So the new, replacement, 10GBE TP-Link TL-SM5110-LR SFP+ modules work. I now have all three SFP connections and the switch is working fine. Couple of observations: Both TL-SG3452X...

@PP_link @KJK So after returning my switch, I listened to @KJK and ordered the exact same replacement since I like the feature set of the TL-SG3452X . My IP assignment issues has been solved with the...

@KJK That's the thing about this switch. Info is all over the map and conflicting. The TP-Link website FAQ configuration link for this switch points to an apparently generic link...

@Clive_A I sincerely thank you for trying to help me to troubleshoot this but setting up a switch should not be this hard. As I indicated, I set up the switch on the same LAN segment as my router. I...

@Clive_A You are describing something different from what I see. There is indeed a dialog to change the switch IP and subnet after clicking on edit IPV4 but there is no field for the router or...

Yes, I saw that page with IPV4. I just want to confirm that, evidently, there is no field and, thus, no need, to put in a IP address for the LANs router, since there are only entries for the switch...