First off, I just want to say that this is great if you want to charge or use a laptop on the go, or as a backup power supply. It does the job. But, it does get very hot, and stays hot for a while after use. It also features many plugs, and I have not yet found a laptop which it does not fit. (Although I suspect that there are probably a few that are not compatible with this product) I bought this for a laptop which I was given, and did not have the power supply, and it is perfect. But, I found that the USB port did not charge my 2G iPod Touch when I used the charging cable, and so it is probably not compatible with certain types of iPod. Another issue I found with it was that the pin connectors for the different jacks are quite fragile, and can bend, and when the power pack is on when you connect a jack, sparks may actually be seen on the connector! So, my advice is not to do what I did!
So, if you want a charger for a laptop, this is for you, but be aware that it may not be compatible!