It supports it in the sense that it provides the extra taps on the Ethernet magnetics for the actual PoE converter to connect to. That's all the onboard support

It supports it in the sense that it provides the extra taps on the Ethernet magnetics for the actual PoE converter to connect to. That's all the onboard support they have, as far as I know - just the few extra connections required to feed the PoE hat which contains all the extra support electronics.