So the power supply is not included in any way, apart from being a good concept and decent construction, but at the same time it is definitely not recommended to try higher voltage devices for charging a very long cable is much thinner than expected and overall the build quality is good, if it's a small device it's good, if it's a larger device like a laptop or tablet I'm still a bit skeptical Use it for the price it's good but I feel I could describe it and deal with it much better if it was assembled much more efficiently as a whole. I would even suggest they do it only if I pay more for it because I was a bit disappointed anyway I won't say I wouldn't buy it but I wouldn't buy it again and after a few uses I am honestly went back to my old cables because they really didn't seem that strong or reliable