@Tedd404 1- The support told me that DAC cable are usually used with 10G but SFP cages are 1 Gbps only on SG2210P. When DAC cable are used it creates a closed loop which prevents POE LED to light up....

I've made some tests with SFP Fiber modules (supported according to SG2210P datasheet) but it's not working better... It's even worse because there's no POE LED and POE is not working contrary to DAC...

Hi, For information, the problem was the DAC cable on SFP port. TP-Link support told me that SG2210P does not officially support DAC cable (it creates a closed loop) and that's why POE LED does not...

@d0ugmac1 Thanks for helping. Mikrotik prefers the source with higher voltage so it should take POE because line power is 24V. I tried to wait a few minutes with POE only, to reboot Mikrotik, to...

Hi, I have a TP-Link S2210P Rev 5.0 with 5.0.5 firmware (the same with 5.0.4). On port 1 (tried port 2, same problem) POE is enabled and the cable is connected to Mikrotik CRS309 on port ETH which...