4GB, 400MHz, 184-pin DIMM
IBM 38L5913, 4 GB, 1 x 4 GB, 400 MHz, 184-pin DIMM
IBM 38L5913. Component for: PC/Server, Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Memory clock speed: 400 MHz, Memory form factor: 184-pin DIMM, CAS latency: 3, ECC