Buffalo TechWorks, 1 GB, 2 x 0.5 GB, DDR, 400 MHz, 200-pin SO-DIMM Buffalo TechWorks. Internal memory: 1 GB, Memory layout (modules x size): 2 x 0.5 GB, Internal memory type: DDR, Memory clock speed: 400 MHz, Memory form factor: 200-pin SO-DIMM, ECC