240W Dell Alienware Charger,19.5V 12.3A 240W Dell Alienware Power Adapter for Dell Alienware M17X R1 R2 R3 R4, M18x R2 X51, Dell Precision M6400 M6500 M6600 M6700 M6800. [7.4x5.0mm][UL Listed]

I bought this and when it arrived, it didn't work, so I exchanged it. The second one only worked for a few weeks and now it's dead too. Don't bother with this. It's cheap.

The adapter I received was true: it weighed as much as the other 240w Dell units I owned, and it also said "Dell." The value for it is really perfect. As with almost anything you buy on Amazon, unfortunately your mileage may vary.

Actually zero stars. Broke after two days...

cheap product