Just got the new Apple wired keyboard. I have it hooked to my PowerMac G4/533 running OSX 10.4 and all the keys seem to work as they should. I am very happy with the feel and have not had any trouble typing. It is so thin it feels like the keys are on the table itself. I had the original plastic keyboard made before the Eject key was added and really like having volume, eject and forward- delete finally. I was kind of afraid it would not give me all the bells and whistles when hooked to my Elder Mac but it does, so I thought I would share in case others were concerned. The box states you need OSX 10.4.10 or later, and I did need to download drivers to get it to work. I am guessing the drivers won't work on older OSes.