CT51272BB1339S - Crucial 4GB DDR3-1333MHz PC3-10600 ECC Registered CL9 240-Pin DIMM Single Rank Memory Module

When you buy Crucial memory, you're buying directly from the largest DRAM manufacturer in America and one of the top three in the world. Crucial Technology is a division of Micron. We have more than 20 years of industry experience and are the lowest-cost, most efficient DRAM manufacturer, and many of the world's leading computer manufacturers use our memory. Crucial brings that same high-quality memory directly to you, the end consumer.