4GB (1x4GB, 2Rx4, 1.5V) PC3-10600 CL9 ECC DDR3 1333MHz VLP RDIMM
IBM 49Y1430, 4 GB, 1 x 4 GB, DDR3, 1333 MHz
IBM 49Y1430. Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR3, Memory clock speed: 1333 MHz, CAS latency: 9, ECC