Samsung 4GB PC3-10600 DDR3- 1333MHz non-ECC Unbuffered CL9 240-Pin M378B5273CH0-CH9 Go to amazon.com Related posts Where to find samsung a3 300? FeatureDell OptiPlex 390 Desktop DDR3 RAM MemoryModel: M378B5273CH0-CH9Data Transfer Rate: 1333MhzPins: 240Capacity: 4GB DescriptionSamsung 4GB PC3-10600 DDR3- 1333MHz non-ECC Unbuffered CL9 240-Pin M378B5273CH0-CH9