Full Details from Amazon.com : http://www.amazon.com/gp/product/B0091L2MNW?tag=onigi-20
8GB Upgrade for a Apple MacBook Pro 2.2GHz Intel Core i7 (15-inch DDR3) Early-2011 System (DDR3
204-pin SODIMM
DDR3-1333
DDR3 PC3-10600 Unbuffered NON-ECC DDR3-1333 135V 1024Meg x 64
The only brand of memory upgrade available directly from a DRAM manufacturer tested to meet the most stringent industry specifications
Install it yourself in about 15 minutes The same top-quality memory that the worlds largest computer manufacturers install in the systems they sell