I'll change my review if needed, but so far almost every outlet I've tried hasn't allowed what I'm plugging in to even get power. The connector always wobbles a bit, but I think that's a moot point. In a socket, the plug is exactly powered, but not everything is so tight. The manufacturer warns that this is possible and promises a refund in case of failure. It's pennies apiece, if that, and I paid about a dollar apiece, so I think they can afford it. My childhood homes were built in the 1960's and 5 years ago their outlets didn't have such plugs. Problem. This place was built in the 1970's and almost all outlets have this problem. It's time to either play electrician or pay the real one. I wonder if there are decent power outlets.