1 x 4GB DDR2, PC2-3200, 400MHz
IBM 30R5146, 4 GB, 1 x 4 GB, DDR2, 400 MHz, 240-pin DIMM
IBM 30R5146. Component for: PC/Server, Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR2, Memory clock speed: 400 MHz, Memory form factor: 240-pin DIMM, ECC