| Unless there's an Isolation transformer inside, I wouldn't try it. generally these type of devices connect their (-) side to their ground. Putting two in series could cause a short to ground potentially damaging the brick, or more. a quick way to test for potential danger would be to buy 2 of them, plug them in, then put a voltmeter between the ground of one and the positive of the other. If you get voltage do not try to connect them in series, else it should be safe. | |
