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Amazon.com: 4gb 1600mhz ddr3 sdram
Amazon.com: 4GB PC10600 DDR3 1333MHz SO-DIMM Memory Compatible with 2011 MacBook Pro, Mid 2010/2011 21.5" & 27" iMac Models, 2011 Mac Mini : Everything Else
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 at Amazon.com
8GB 2X 4GB DDR3 for Apple MacBook Pro 15" inch MC371LL/A 2.4GHz Intel Core i5 PC3-8500 204 pin 1067MHz SODIMM Memory RAM (PARTS-QUICK BRAND) at Amazon .com
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 at Amazon.com
A-Tech 4GB PC3-8500 DDR3 1066/1067 MHz RAM for MacBook, MacBook Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) | 204-Pin SODIMM Memory Upgrade Module at Amazon.com
4GB Memory Upgrade for MacBook Pro, iMac, and Mac mini
4GB DDR3 PC3-12800 1600MHZ FOR MAC CL11 SODIMM 204PIN 1.35V 1.5V - Walmart.com
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 at Amazon.com
CORSAIR 8GB (2 x 4GB) 204-Pin DDR3 SO-DIMM DDR3 1066 (PC3 8500) Memory for Apple Model CMSA8GX3M2A1066C7 - Newegg.com