Hewlett Packard 355951-888 Size: 512MB Speed: 533MHz Type: PC2-4200 Pins: 240 ECC/NECC: NECC Notes: 512MB PC2-4200 533MHZ DUAL-CHANNEL DDR2 SDRAM - HYS64T64000HU-3.7-A, RML1040MD38D6F-533