Buffalo TechWorks, 2 GB, 1 x 1 GB, DDR, 400 MHz, 200-pin SO-DIMM Buffalo TechWorks. Internal memory: 2 GB, Memory layout (modules x size): 1 x 1 GB, Internal memory type: DDR, Memory clock speed: 400 MHz, Memory form factor: 200-pin SO-DIMM, ECC