Hi, I have a macbook pro 13-inch, Early 2011, and an iMac 21.5-inch, Mid 2011. The questions are: 1) I want to upgrade the memory of the Macbook Pro with one of these memories: http://www.amazon.es/Komputerbay-MA...W1B2/ref=sr_1_5?ie=UTF8&qid=1349364857&sr=8-5 http://www.amazon.es/Crucial-CT2KIT...YH3K/ref=sr_1_1?ie=UTF8&qid=1349364857&sr=8-1 http://www.amazon.es/Komputerbay-MA...VK1O/ref=sr_1_6?ie=UTF8&qid=1349364857&sr=8-6 I wonder if these memories can be really used in the upgrade?? Which is better?? (Just in case, the first two ones are 1333Mhz CAS 9, and the last one is 1600Mhz CAS 10) 2) I wonder if that memory I will remove of the Macbook Pro, can be put in iMac, to upgrade the memory on it too. Thank you.