ADATA 4GB DDR3 SO-DIMM 1333MHz, 4 GB, 1 x 4 GB, DDR3, 1333 MHz, 204-pin SO-DIMM ADATA 4GB DDR3 SO-DIMM 1333MHz. Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR3, Memory clock speed: 1333 MHz, Memory form factor: 204-pin SO-DIMM, CAS latency: 9