A-Tech 4GB RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010, Mid 2011, Late 2011), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Module
DEWIN DDR2 Memory Module, 4GB 800MHz DDR2 4GB High Capacity 800MHz Fast Data Transmission DDR2 RAM 4GB : Amazon.com.be: Electronics
4GB DDR3-1600MHz PC3-12800 240-pin 1.5V 1Rx8 Non-ECC Unbuffered Desktop Memory by NEMIX RAM at Amazon.com
Samsung ram Memory 4GB (1 x 4GB) DDR3 PC3-12800,1600MHz, 204 PIN, SODIMM for laptops
Samsung 4GB DDR3 PC3-12800 1600MHz 204-Pin SODIMM Laptop Memory Module RAM. Model M471B5273DH0-CK0 at Amazon.com