ADATA AD2S800B1G5-2, 1 GB, 2 x 0.5 GB, DDR2, 800 MHz, 200-pin SO-DIMM ADATA AD2S800B1G5-2. Internal memory: 1 GB, Memory layout (modules x size): 2 x 0.5 GB, Internal memory type: DDR2, Memory speed: 800 MHz, Memory form factor: 200-pin SO-DIMM, CAS latency: 5