The product is a set of four 1GB DDR3 SDRAM memory modules designed for desktop computers or PCs. Manufactured by Micron, these modules have a form factor of DIMM and a bus speed of PC3-10600 (DDR3-1333). They come with a lifetime manufacturer warranty and feature ECC memory for error correction. With a total capacity of 4GB (1GB per module), these memory modules are a reliable and high-quality option for upgrading or replacing existing RAM in desktop computers.