I can tell you now no external hdd that you could buy at your normal electronics store would draw enough current to cause damage. I have studied electronic components as part of my degree for years.
lol, wow. You are so incredibly wrong. And your comment about the house power as an example, makes me think you are full of it. Sorry. But I know what I am talking about here. The OP needs to listen to my suggestion, as it is the ONLY correct answer here.








