Certified for Apple 8GB KIT (4GB x 2) 1066MHz DDR3 SODIMM Notebook Memory for Apple Imac Macbook Macbook Pro 2pcs of 4GB DDR3 1066 so dimm for Apple Computers Compatible with MacBook Pro (13-inch, Mid 2009), MacBook Pro (13-inch, Mid 2010), MacBook Pro (15-inch, Mid 2010), MacBook Pro (15-inch, 2.53GHz, Mid 2009), MacBook Pro (15-inch, Mid 2009), MacBook Pro (17-inch, Mid 2010), MacBook Pro (17-inch, Mid 2009), MacBook Pro (17-inch, Early 2009) Dataram, a trusted brand since 1967 Lifetime Warranty