I have Dell Switches that model is N4032F its look fine and work fine also.
It’s not recognize Ubiquiti SFP model (UF-SM-1G-S), anyone has experiences or tip?
Does the switch log any messages when transceiver is plugged in? What firmware is the switch running? Sometimes a firmware update can help with interoperability with 3rd party hardware. Have you tried manually setting the speed on the interface?
Daniel CoveyDell EMC| Enterprise Support ServicesGet support on Twitter:@DellCaresPRODownload our QRL app:iOS, Android, WindowsDell Networking Resources