Question about TP-Link Omada OC200 Cloud Controller

ETH1: if the controller is ONLY supplied via an external POE interface (e.g. with a switch or router which has PoE connections).
ETH2: is a normal input/output, e.g. also for a connection to a switch/router ect.
If the controller is NOT powered with POE via ETH1, it must be powered with a USB cable (5V, 1A).

But beware: If the controller is only powered via USB, the integrated backup function to an inserted USB stick will not work. - The backup function requires a power supply via PoE!

Otherwise, the controller has been working perfectly for 1 year! Updates / manipulation / monitoring etc. from the remote network or the connected access points (TP-Link EAP245) via the Internet also work perfectly.

eth1 and eth2 are bridged.
Since the power supply is exclusively via PoE, a PoE power supply unit can probably be connected to eth2 router/switch if required.