Kingston Technology System Specific Memory 4GB DDR3-1600, 4 GB, 1 x 4 GB, DDR3, 240-pin DIMM Kingston Technology System Specific Memory 4GB DDR3-1600. Component for: PC/Server, Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR3, Memory form factor: 240-pin DIMM, ECC