The product is a lot of two Nanya 2GB memory modules, totaling 4GB of DDR3 SDRAM RAM. Each module has a capacity of 2GB, with a bus speed of PC3. These memory modules are ideal for upgrading or replacing existing RAM in computers that support DDR3 memory technology. With a total capacity of 4GB, this product provides a reliable and efficient boost in performance and multitasking capabilities for your computer.