No, it doesn't work on the 1.5GHz model. The previous owner said it never worked and that he always used it with a mouse. Although I don't know if he was the original owner. I picked up a replacement trackpad for it, but that never worked either. Must be the logicboard. The 867 Model I bought was supposed to be broken. I was going to use it for parts, but when it arrived, it turned out to work just fine. So I'm not going to take it apart.