I have one on an M35-S456. It's great! I have a business doing video editing and creating DVDs for people. With this burner, I can now do all of my work from beginning to end on my laptop. Before, I had to transfer my rendered video to my desktop for burning.
I don't know if you got my last message. But I decided to stay w/ the Toshiba. I absolutely love it, as does everyone else who sees it. It's very light, much lighter than the Sony "17" inch. My only complaint is that it runs hot on the bottom upper left hand side. I'm very happy to learn that the DVD burner is so great. Thanks! Mig