MacMemory Net 8GB DDR2-667 FB-DIMM Fully Buffered PC3-5300 ECC Kit for Apple Mac Pro - Model Id 1,1 and 2,1 - (2x 4GB) All Ramjet products are sold exclusively by the Ramjet Store. Ramjet has NOT authorized any Amazon Sellers to list the Ramjet brand for resale. Ramjet is unable to warranty any product that has NOT been purchased from the MacMemory Net Store.