My product is 55Y9010
I find the scrolling function cannot work in several programs.
i.e. Visual Studio 2010, Windows Live Messenger, iTunes, etc.
Especially Visual Studio 2010, it really annoys me because it decreases my working efficiency.
In thinkpad notebook, I can get it work by modifying tp4table.dat.
But there's no such file in external keyboard driver.
The other annoying thing is the layout of fn/ctrl key.
Because fn key doesn't send scancode, therefore I cannot even use software to reset the layout.
I recommend to add the feature which allows user to exchange these two keys.