The Micron 4GB DDR4 SDRAM UDIMM PC4-2666V 288-Pin ECC MTA4ATF51264AZ-2G6E1 is a high-quality memory module designed for computers and networking systems. With a total capacity of 4GB and ECC memory features, it provides reliable performance and error correction. The module is backed by a lifetime manufacturer warranty, ensuring long-lasting durability and support. The compact UDIMM form factor and DDR4 SDRAM technology make it a practical and efficient choice for expanding memory capacity in various computing applications.