Hypertec AB564A-HY (Legacy), 4 GB, 4 x 1 GB, DDR2, 533 MHz, 240-pin DIMM Hypertec AB564A-HY (Legacy). Component for: PC/Server, Internal memory: 4 GB, Memory layout (modules x size): 4 x 1 GB, Internal memory type: DDR2, Memory clock speed: 533 MHz, Memory form factor: 240-pin DIMM