If like me you have a sub notebook (Lenovo Thinkpad x61s) without a CD drive then this little external DVD/CDRW drive is perfect. I needed to install a new operating system on the laptop and this drive was was just what I needed. It is a good size, nice and slim, so not much extra weight to carry around and works just from the supplied USB cable, though there is an A/C adapter supplied as well. the drive is much more robust than I was expecting and should last well in normal use, though I don't expect it will survive being dropped from a height! its nice and quiet which is good as you don't want lots of whizzing sounds when watching DVD's in fact the only thing you will need to do to watch DVD movies is download a DVD codec if you don't have a software DVD player like WinDVD already. It arrived very quickly after ordering and its excellent especially for only £30ish!