I have this model of MacBook: http://support.apple.com/kb/SP644 And I bought this memory from ebay: http://www.ebay.com/itm/130743858133?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649 And I wanted to ask whether it is suitable? Is the laptop will support such a memory? Or that model was too old? Please help me, I really need your help friends .. It's very important to me .. Thank you all.