All wallets and devices in the Ethereum ecosystem are built to acknowledge Ethereum addresses expressed in either capital or lowercase characters with none difference. In case you actually need Active PoE (803.2at) then you can spring for any wESP32*, get an Energetic PoE splitter that breaks out the ability and https://keeganuroki.blogrenanda.com/36261025/eth-vanity-address-can-be-fun-for-anyone