OWC 8.0GB (2X 4GB) P1333MHz 204-Pin DDR3 SO-DIMM PC3-10600 CL9 Memory Upgrade Kit, (OWC1333DDR3S08S)

8GB (2 x 4GB) PC10600 DDR3 1333MHz SO-DIMMs Compatible With 2011 MacBook Pro, Mid 2010/2011 21.5" & 27" iMac models, 2011 Mac miniCapacity - 8GB (2 x 4GB)Compatible With 2011 Mac miniCompatible With 2011 MacBook ProCompatible With Mid 2010/2011 21.5" & 27"