Corsair 4GB DDR3-1066 Mac Memory Kit, 4 GB, 2 x 2 GB, DDR3, 533 MHz, 204-pin SO-DIMM
Corsair 4GB DDR3-1066 Mac Memory Kit. Internal memory: 4 GB, Memory layout (modules x size): 2 x 2 GB, Internal memory type: DDR3, Memory clock speed: 533 MHz, Memory form factor: 204-pin SO-DIMM