@odix67 Yes, ER605 can't do this, but I have an ER8411 and the new firmware 1.2.0 has supported and adapted with v5.13.

@nordic-style Do you have any VLAN settings? Like setting a VLAN ID or anything else.

@dononeil I mean fixed the channel in AP side, and if the AP changes different channels and indeed the client cpe will drop-out because it can't link to the AP. Alternative firmware? what is it? How...

@Oldsports I prefer case1, and I haven't tried using third-party POE Adapters or POE switches with tplink omada APs together. I usually use the original adapter or tplink poe unmanaged switch and no...

@Napsterbater Have you downgraded it? I haven't seen a similar issue for EAP660 firmware upgrades related, have you changed or checked the power supply? What's the firmware version of the controller?

@Oldsports Here, take a look, especially Option4: Alternative A and Alternative B, if the switch uses Alternative A but the EAP uses Alternative B, they can not work together.