I had some problems with my laptop really getting slower and slower as time passes so I just knew I had to upgrade it soon. First stop, I knew I had to buy some RAM memory for it and since it was a Macbook, definitely I would prefer it to have an original Mac memory for it to make sure it runs most perfectly. But while chatting with some IT personnel in our office, I was surprised to actually know that I can also put in other brands of modules in it, and even one said he had a Dell memory in place of an apple laptop as he said it just had to be the right configuration for it to work. Well anyway I did try this out by buying 2 different modules from www.memoryupgrade.pro to see if this will work out just fine for my laptop.