Lenovo 4ZC7A08700, 4 GB, 1 x 4 GB, DDR4, 2666 MHz, 288-pin DIMM Lenovo 4ZC7A08700. Component for: PC/Server, Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR4, Memory clock speed: 2666 MHz, Memory form factor: 288-pin DIMM