The Avant 4GB PC3-12800 DDR3 1600 PC Memory UDIMM AVF6451U67F1600GH-SADP is a high-quality memory module designed for computers that require a total capacity of 4GB. This UDIMM module is designed with ECC memory features, ensuring reliable performance and error correction. With a bus speed of PC3-12800 (DDR3-1600) and a lifetime manufacturer warranty, this Avant memory module is a dependable choice for upgrading your computer's memory capacity. Made in China, this module has a form factor of UDIMM and is compatible with DDR3 SDRAM technology.