Here's the apple doc on it:
says it needs:
PC3-8500 DDR3 unbuffered non-parity 204-pin module 1066 MHz
Googling around, seems like this gives me a list of compatible options (I can't post more than two links without 10 reputation, so):
How do you pick which one to go with? For example, this is the #1 hit:
what's the difference with the other matches?
Also, none of them mention the:
points like in the apple kb article. Not sure if that's a problem.