Manufacturers and suppliers should be legally obliged to permanently mark (engrave, laser etch, hot print) on any wall wart supplied as-new with a piece of equipment the company name and exact model number of the associated device, thus ensuring a slightly greater chance of reconciling multiple anonymous power supplies with the correct equipment.
That is all.
("Let's all" disclaimer).-- 8th of 7, Mar 20 2017 I thought this was a removal technique.
I have it on good authority (lewstanley? you there?) it does not work.-- bungston, Mar 29 2017 random, halfbakery