The title states the question.
More background: I will occasionally purchase a unit in non functional status in order to repair it. A software locked unit is unrepairable, from my point. I won’t waste time if I can determine if it is disabled unit. Better yet, I can ask the seller the question directly, but that does not always work.
Best answer by Airgetlam
My understanding is only by connecting it to an existing system, and attempting to add it, which will bring up some sort of warning.
I don’t believe there’s a published list of items by number or MAC address to check, if that’s what you’re looking for.