Worked well right out of the box. A Christmas gift for my wife, she's been using it daily for a while now and she's quite happy with it except for the power cord, it fits into the lap top "loosely", and keeps falling out, which is a little annoying.  When first being used, the battery life was just about two hours, and degraded quickly over time. I've already had to install a replacement battery, which is providing in excess of four hours working time before she has to revert to the cord.