@ethanschoonover Brilliant! I have bunches of chargers and with my vision, even with the best magnifying glass I can lay my hands on, I can't *tell* which ones are interchangeable and which aren't. It's a real hassle to have to keep track of probably-duplicate chargers, but I don't want to fry anything. Chargers should have had clear visible labelling like yours from the start! If I can ever figure out what I've got, I'll follow your lead.