So far great, installed this 12v supply, and the basically identical 5v supply available here as well, for an expansion cabinet to support additional graphics cards external to PC cases

You can buy name brand converters with on/off switches, shielded plugs, meters and fancy cases but in the end, they all do the same thing - change 110AC to ~12V DC.

Unit arced and blew a breaker, but once wired correctly worked as it should.