The product is a set of three 1GB DDR3 PC3-8500U 1066MHz desktop RAM modules by Samsung and Elpida. These DIMM modules are designed for desktop computers and have a total capacity of 3GB. They come with a lifetime manufacturer warranty and are ECC memory modules, ensuring reliability and error correction. Each module has a height of 30mm and has 240 pins for compatibility with standard DDR3 slots. Ideal for upgrading or replacing existing RAM modules, these Samsung and Elpida modules offer fast performance and error correction for a stable computing experience.