I have a Mac iBook G4 and was very doubtful as to whether I would find a suitable web cam for this machine.
We enquired through many friends and so called 'experts' and got many negative results. However, we used our own judgement and went ahead with the purchase. As our iBook has a built in microphone we were unsure whether we could switch off the web cam mic. However, no problem here, but you do need a USB2 port to drive the unit.
We have been very pleased with it, it is white and blends in nicely with our unit.
It gives a very clear picture, easy to set up and all our original fears have been dispelled.
If you are thinking of buying one, go for it, you will not be disappointed.