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As I said when it was first announced, a 3rd party PoE hat has been available for Pis for years. And, what's more, it's not a terribly difficult thing for a competent electronics hobbyist - granted, one with probably too much time on their hands - to cobble together for themselves if they really wanted it and had the networking equipment to support it. What advantage does the "official" PoE support - that still requires a hat - have over the one that's already out there? No one yet has been able to give me an answer to that simple question.