As you have surely noticed from the other reviews, this is not a genuine Dell product and the one that I purchased has just crapped out after less than 30 days.
I am now attempting to contact Amazon so that they may pull this product and this company from their marketplace.
DO NOT BUY FROM THIS COMPANY!!!

Summary: My unit failed after 2 months and it is not a genuine Dell charger.

I bought this to replace my original Dell charger. A little over 2 months later, it's dead. When it worked, it would really overheat. As the previous reviewers stated, this is not a Dell charger even though it is advertised as such. It still might be worth buying if the charger lifetime vs replacement cost is better than Dell chargers. For me, this was not the case, and I will be spending the extra money for a Dell-brand charger.

This is described as a Dell Charger...IT IS NOT. It is a cheap looking imitation. However, it worked, and was inexpensive. I have not gotten any error messages, but I have a serious problem with describing something, and posting an image, of a genuine replacement, and then getting something else. The Battery Center should not be allowed to do this.

Despite being advertised as "a Genuine Dell PA-10 Family 90W AC Power Adapter", this is not a genuine Dell product. It has the exact same size/shape as the Dell unit, but lacks the Dell logo, and appears slightly lower in quality, with a shorter and cheaper feeling cord.

The computer doesn't recognize it as a Dell unit either, and gives a warning (both on boot and in Windows) that it isn't genuine and won't charge the battery, and that the computer will run at a lower speed. Despite this, I found that it does charge the battery and the computer runs at full speed.

So this is far from a perfect replacement. However, Dell's own units are of such abysmally low quality (I had 3 fail in the first year of owning my laptop), that this one can hardly be worse.

Worth it for the price (much lower than buying from Dell), with the above caveats.