Review on Universal Charger Adapter ThinkPad Computers by Jeff Sorensen

I needed a 12V charger for my ASUS ZenBook. I somehow found that all 19V ZenBook chargers are built roughly the same, and while my specific model number wasn't on their list, one of them would certainly fit. After all, it claims to be a "universal" charger. Not right. If you own a ZenBook, you know that there are a large number of model numbers. Mine: UX533F. None of the adapters worked. The one that "should" work didn't fit in the outlet. The other two that matched (and were pretty much the same tension) didn't work either. My guess is that the ZenBook has a feature that allows it to determine if the correct charger is connected, if the voltage is correct, and if the plug fits or not. So all I can say about the effectiveness of this product is that "universal" isn't really universal. I think that's the really good thing about standards: there are so many to choose from.