I've been using a nice Brother labeler for years to label all my power plugs. eg this power plug goes to this router etc. since a lot of them are subtly differe

I've been using a nice Brother labeler for years to label all my power plugs. eg this power plug goes to this router etc. since a lot of them are subtly different. I once mixed up two different netgear router power plugs - a new version and an older version. I had the newer netgear router hooked up to the old plug - which gave slightly less amperage - and everything worked fine until it would randomly die. It took me a long time to figure out that it was dying when it was under load and trying to pull more power than was available.