Apple Computer, MacBook Pro 13-inch 2.26/2.53 Ghz Core 2 Due (P7550, P8700), MacBook Pro 13-inch 2.4/2.66 GHz Core 2 Due (P8600, P8800), Model Year, Mid 2009, Mid 2010, Part Name, Memory 4GB DDR3, Manufacture Part Number, N/A, Compatible Apple Order Number, MD990LL/A, MD991LL/A, MC374LL/A, MC375LL/A, Compatible Model Number, A1278, EMC Number, EMC 2326, EMC 2351, EEE Code, N/A, Compatible Apple Computer Family, MacBook Pro (13-inch, Mid 2009), MacBook Pro (13-inch, Mid 2010)
Order you product here: 661-5595 Memory 4GB DDR3 for MacBook Pro 13-inch Mid 2009-Mid 2010 A1278 MD990LL/A, MD991LL/A MC374LL/A, MC375LL/A, 661-5595
source http://info.applepartsellers.com/661-5595-memory-4gb-ddr3-for-macbook-pro-13-inch-mid-2009-mid-2010-a1278-md990ll-a-md991ll-a-mc374ll-a-mc375ll-a