DDR2 240pin PC2-4200 ECC Registered 512MB
DDR2 240pin PC2-4200 ECC Registered 1GB
DDR2 240pin PC2-4200 ECC Registered 2GB
DDR2 240pin PC2-4200 ECC Registered 4GB
DDR2 240pin PC2-4200 ECC Registered 8GB