"i have to buy this to power the SLI graphics of my Y500. i have no choice. It doesn't come with the Laptop. I wish they'd give a choice of which adapter to get when buying the laptop. now my 120w is pretty much useless now that i have the 170w.
what i like about this is. that it's lighter that what i expected. also the look is not common like a standard rectangular brick. some of it's edges are shaped to make it look non plain."