Works great in the Macbook 4.1

I have my Macbook (4.1 or early 2008) upgraded with this memory.
This trial I had ever been with a memory from Kingston performed (not just for Apple, but simply according to specification) (then bought in a well-known electronics store).
Unfortunately, I did not know then that there are certain memory for the Mac, and it had at that time therefore does not work either.
So for those who are unsure whether they can use this memory for this Macbook ...... it works great!