4GB (4x1GB), PC2-4200MB/s, DDR2 533MHz, Registered
HP 4GB DDR2-533, 4 GB, 4 x 1 GB, DDR2, 533 MHz
HP 4GB DDR2-533. 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