Lenovo 4X77A12188, 32 GB, 1 x 32 GB, DDR4, 3200 MHz, 288-pin DIMM Lenovo 4X77A12188. Component for: PC/server, Internal memory: 32 GB, Memory layout (modules x size): 1 x 32 GB, Internal memory type: DDR4, Memory clock speed: 3200 MHz, Memory form factor: 288-pin DIMM