4GB kit (2GBx2), 240-pin DIMM, DDR3 PC3-10600 memory module
Crucial 4GB DDR3 PC3-10600 memory module, 4 GB, 2 x 2 GB, DDR3, 1333 MHz, 240-pin DIMM
Crucial 4GB DDR3 PC3-10600 memory module. Internal memory: 4 GB, Memory layout (modules x size): 2 x 2 GB, Internal memory type: DDR3, Memory speed: 1333 MHz, Memory form factor: 240-pin DIMM, CAS latency: 9