I can do one worse. I have aquarium lights. They require 48VDC at 1A, which makes it quite a bright light; they’re nice, really… But the connector is USB-A, a

I can do one worse. I have aquarium lights. They require 48VDC at 1A, which makes it quite a bright light; they’re nice, really… But the connector is USB-A, and worse, marked as being USB. The power supply just provides 48V unconditionally.