Hi @ZoltanK, For mine, I just set my computer's IP to 192.168.0.2 and directly wired it to the switch. By default the web UI is accessed via browser at 192.168.0.1.

Hi @TUANVU_OMADA, The RJ45 port is only for console use, not TCP/IP. You will need to connect to it using one of the SFP+ ports.

@daubstep, what I've done is to create a SSID for testing. Then disable the SSID on all but one AP to test; or override the SSID name on the AP where you want to test. Option 1 is easiest with fewer...

@daubstep, it looks like you have multiple AP models and it might be an issue with one. Maybe test with each AP model and report if some fail and others work.

@daubstep, might be WPA Mode. Try one without WPA3. You may just need to start with an new SSID with no security or other features enabled to see if it works. Assuming it works, then star enabling...

@daubstep can you try connecting to 2.5GHz band channel?