4GB (2X2GB) DDR2-667 PC2-5300 ECC Register Samsung. SAMSUNG Part Number: M393T5750CZA-CE6. until eCheck clears.. Condition:: Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions : Type: : DDR2 , Number of Modules: : 2: Brand: : Samsung , Capacity per Module: : 2GB: MPN: : M393T5750CZA-CE6 , Memory Capacity: : 2GB: Bus Speed: : DDR2-667 ,