Kingston Technology System Specific Memory 2GB DDR3 1600MHz Module, 2 GB, 1 x 2 GB, DDR3, 240-pin DIMM Kingston Technology System Specific Memory 2GB DDR3 1600MHz Module. Internal memory: 2 GB, Memory layout (modules x size): 1 x 2 GB, Internal memory type: DDR3, Memory form factor: 240-pin DIMM